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Table of Contents
Spectrometer Basics

P. 007

Sampling Accessories

P.097

Monochromators

P. 017

Optical Fiber & Adapters

P.101

Spectrometers

P.027

Application & Selection Guide

P.109

Detection Systems

P.057

Appendix

P.131

Light Sources

P.063

OpticsP.141

Filter Wheels

P.091

About Company

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SectionⅠ: Spectrometer Basics

Non-dispersive Wavelength Selection
Filter Based Systems
Filter Spectrometer
Filter Fundamentals
How to Characterize a Filter
How a Filter behaves at off-normal incidence
Dispersive Instruments: Grating Monochromators and Polychromators
Grating Fundamentals
Grating Performance Characteristics
Grating Spectrometer Fundamentals

08Spectral Products

Non-dispersive
Wavelength Selection
Filter Based Systems
In many applications source radiation isrequired to be sorted out into narrow,discrete wavelength bands. Optical filtersof absorptive, reflective or interference
types are perhaps the simplest apparatus
for performing such a task. An absorption
filter relies on its unique optical absorptionof certain spectrum by use of coloredglasses or sandwiched dyed glasses. It isperhaps the least expensive choice forapplications where a narrow bandpass is
Spectrometer Basics

not critical. Figure 1 shows representative
Figure 1. Transmission curves for typical absorption filters.

transmittance curves of some typicalabsorption filters.Reflective filters areusually made with dielectric thin films
coated onto a glass substrate. Thesefilters can withstand higher radiation
power with better thermal stability at
increased cost over the absorption filters.
Absorptive and reflective filters are usefulin the visible and near infrared region fororder sorting, band pass, attenuation andother uses. While coupling with multiple
filters, an effective bandwidth of tens tohundreds of nanometers can be achieved,
Figure2.
Interference filters differ from absorption
and reflective filters in that opticalinterference phenomenon is utilized forthe generation of narrow band outputs.

dielectric.Interference filters are available

Figure 3 illustrates a typical interference

throughout UV, visible and infrared

filter consisting of a dielectric spacer andregions. Center wavelength, peakmetal layers. When wide band radiationtransmittance, full width at half maximum

occurs at a normal incidence, reflected(FWHM) are often the specifications

light from the first and second metallic film

characterizing a filter, Figure 4. Peakinterfere with each other resulting inwavelength, blocking efficiency andreinforcement or cancellation of varioustransmission profiles are also used towavelengths of light passing throughdescribe a filter performance. A typicalthem.

interference filter has a band pass on the

The reinforced portion thus transmits

order of 1 to 2% of the wavelength at peakthrough while the other wavelengthtransmittance. In some wavelengthcomponents suffer destructive interference.

regions this figure can be reduced to

The wavelength band passing through isalmost 0.1%.

determined by the thickness of the

Figure 2. Transmission band by use of multiple filters.

Figure 3. Diagram for a typical interference filter.

Spectral Products

09

Filter spectrometer
When used in conjunction with

HeNe laser filter would have a center

the range of the detector in use (PMT, Si,appropriate detectors, filters form basic

wavelength of 632.8nm. By definition, thePbS).

wavelength selective detection systems. A

center wavelength is the arithmetic mean

filter spectrometer has the advantages ofof the half-power wavelength.

simplicity, high signal to noise ratio, low

Size:
Sizes of the filters are specified in

Percent Transmission:

inches or millimeters, along withcost and high throughput. A rotatable

The amount of power received by thetolerances. Typical sizes are 0.50",1.00"

filter wheel allows multiple filters to be

detector compared to the total powerand 2.00" diameters. Typical maximum

mounted and sequentially selected into

available. The traditional formula is %T

thickness is 0.25".

the light path.

I/I0 x (100), where I0, is the incident

Detector
Filter Wheels

Collimator

Light Source

Figure 4. Diagram for fifter characteristics

Figure 5. A filter-dased spectrophotometer

Figure 5 depicts a filter transmission

power and I is the transmitted power.

spectrophotometer, which uses two wheels

Transmission can be specified as power

Optical Density:

in series. The combination of filters in theat the center wavelength or peak power

Neutral Density Filters vary the intensity

light path, that have characteristicthat may occur at wavelengths slightlyof the beam over a wide spectral region

removed from the center wavelength.

by either absorption or a combination oftransmission curves, generates variable

absorption and reflection. Values arepass bands. When equipped with stepping

Half Bandwidth:

motors and computer interfaces, the filter

The width of the pass band inwheels can be automated to perform

nanometers at the half-power points of the

programmed sequences. Applications ofpass band. It is often expressed as full

filter wheels have been found in atomic

width at half maximum (FWHM).

spectrometry, environmental monitoring,illuminators, laser spectroscopy, and soon.

Filters have a range of spectral neutrality

The amount of energy, outside the filter

that defines the bandwidth over which thepass band, reaching the detector. It is
often expressed as an absolute level,transmission peaks outside the pass bandexceeding 0.0001 T or 0.01%T. The

Center Wavelength:
The arithmetic mean of the pass band
expressed in nanometers. For instance, a

Where T transmission. Neutral Density

Out-of-Band Rejection (Blocking):

Filter Fundamentals such as 10-4, meaning there are no
How to Characterize a Filter

specified in units of Optical Density (O.D.).

rejection range in nanometers must
accompany thisspecification. The

O.D. values apply.
Band Pass Shape:
Pass band shapes can vary fromtriangular to nearly square. The number ofcavities involved determines the overall
shape. In general the morecavities, themore square the band shape.

rejection range is usually chosen to coverwww.spectralproducts.com

Spectrometer Basics

Sample Holder

10Spectral Products

How a Filter behaves at off-normal incidence
If a beam incidents a filter at an angle

shift is highly dependent on the internal

λ0 Wavelength at Normal Incidence

other than normal, certain characteristics

design of the filter. The following equation

Ø Angle of Incidence

will change with incidence angle. Center

may be used t o

n0 Refractive Index of External Medium

wavelength, the most important parameter

wavelength at a certainof a filter, varies approximately as aangle of incidence.

determinetheneff Effective Refractive Index of Filter
Figure 6 illustrates a plot showing thecosine function,shifting towards shorter

relationship between the incident angle

wavelengths with increasing angle.

and the shifting of the wavelength. λ0 is

Therefore it is a good practice to use aassumed to be at 632nm, n0 and neff arecollimated beam in the filter instrumentation,

Where:

as in Figure 5. The exact amount of the

λWavelength at Angle of Incidence

1.00 and 1.35 respectively.

Spectrometer Basics

Figure 6. Filter wavelength shift as a function of incident angle

Figure 7. Filter wavelength shift as a function of incident angle

Spectral Products

11

How does a filter respond to
Environmental Condition Changes?
Filters are sensitive to changes in environment, with temperature andhumidity being the most critical factors. Temperature change causes thecenter wavelength to shift approximately 0.02nm per degree Celsius.
Meanwhile optical cements used in the filters may be broken down when thetemperature exceeds a certain limit. It is recommended that wherever possible
the filters should be placed away from heat sources such as quartz tungsten
halogen lamps. Figure 7 shows the approximate behavior of the Temperature
Coefficient. Long-term exposure to extreme humidity may cause filter
deterioration, although there is no precise correlation between humidity andfilter life. Temperature/humidity cycling tests indicate filters that survive the

Figure 8. Diagram of a grating monochromator

most cycles last longer under normal operating conditions.

Spectrometer Basics

Dispersive Instruments: Grating
Monochromators and Polychromators
In many spectroscopic applications, a scanning wavelength selection device
is essential, which can be tuned to isolate a narrow spectral radiation
continuously over a wide spectral range. This can be accomplished by
employing a dispersive element such as a grating together with a scanningmechanism, Figure 8. Diffraction gratings are widely used as the
wavelengthdispersing element today
Figure 9. A reflective diffraction grating

Grating Fundamentals
How Does a Grating Work?
Gratings demonstrate a unique dispersion phenomenon by which a spectrum of light is separated in space by wavelength. A
reflective diffraction grating has microscopic periodic structures, grooves, corrugated on a substrate material, Figure 9. The series ofparallel grooves are spaced at about the wavelength of light. The grating surface is usually coated with a metal for high reflectivity.
Interaction of light with a grating possessing grooves the same size as the wavelength of the radiation exhibits diffraction. Lightreflected from the grating surface is diffracted by the grooves. A monochromatic light incident on a reflective grating is diffracted first
and then undergoes a destructive interference in most directions resulting in a cancellation at these angles. It is only along certain finite
number of direction that rays from grooves survive as a result of constructive interference. These directions are termed as diffraction
orders. In Figure 9, the grooves of the grating are shown perpendicular to the plane of incidence. The light strikes the grating at anincident angle α, to the grating normal, is then diffracted at an angle β. When defining integer m as the diffraction order and d as groove
spacing, maximum constructive interference is found to occur under the condition:www.spectralproducts.com

12Spectral Products

Several important characteristics are revealed by the above grating equation:
1. For a given diffraction angle βseveral values of λmay satisfy the equation with corresponding order m.First order radiation (m 1)of 900nm shares the same diffraction angle with that from a second order 450nm and from a third order 300nm radiation lines.
2. The diffraction order m may carry a sign of either positive or negative to reflect the fact that the incident light may be diffracted oneither side of the grating normal.
3. If parallel rays carrying multiple wavelength components fall on the grating, each wavelength within the same order will have a
distinctive value of β‚ determined by the grating equation. Consequently, a polychromatic light is spatially dispersed.

GratingPerformance
Characteristics

Grating Typeregions. Protected aluminum coating is

Commercially available gratings are

more resistant to oxidation, thus is more

Spectrometer Basics

manufactured by processes including

suitable for UV use. For near infrared andGratings are primarily characterized byruling, replication, holographic methods,

infrared applications, gold overcoating

their groove density, blaze (peaketcetera. Ruled gratings are mechanicallydemonstrates superior reflectanceefficiency) wavelength and manufacturing

ruled with a diamond-ruling engine on a

performance over aluminum.

method. For example a 1200 x 300 ghost-surface coated with thin metal. Replicatedfree ruled grating would have a groove

gratings are produced by the replication ofdensity of 1200 grooves per millimeter, aa master diffraction grating. Ruled andShaping individual grooves can alter the

peak efficiency at 300 nanometers, andreplicated gratings typically have grooves

distribution of light into different orders.

would have been manufactured by anin a triangle format. The production of

The optimization of groove profile tointerferometrically controlled process thatholographic gratings involves the

maximize grating efficiency in a certain

eliminated spectral ghosts.

photographic recording of laser generated

spectral region is often referred to asinterference patterns. Holographic

blazing. The maximum grating efficiency

gratings usually contain sinusoidal shaped

occurs at the blaze wavelength. Seegrooves.

Figure 10.

Reflective Coatings

Grating Efficiency

Groove Density
Groove density, groove frequency or

Blaze Wavelength

pitch of a grating, G, is defined as thereciprocal of groove spacing, 1/d. If thegroove spacing is in a unit of millimeters,

Aluminum is primarily used as theGrating efficiency is expressed as the

G is commonly referred to as grooves perreflective material for gratings throughout

ratio between monochromatic lightmillimeter.

ultra-violet (UV), visible and near infrareddiffracted into a given order and theincident monochromatic radiation. As theincident wavelength differs from the blaze
wavelength, the two polarizations will
exhibit different diffraction efficiency.
Figure 10 shows a typical grating
efficiency curve. The dashed line
represents the“P”polarized radiation
while the thin solid line is for“ S”
polarization and the bold solid line is theaverage.

Figure 10. Typical grating efficiency curves

Spectral Products

Resolving Power13

slit, forms a narrow optical image, and is

An array spectrometer demonstrates high

The resolving power of a grating, R, isthen directed to a collimating mirror by areadout speed and stable wavelength

the measure of its ability to separate two

folding mirror. The collimating mirror

calibration when using fixed gratingclose wavelength lines. It can beproduces a parallel beam and projects it

expressed as the product of the diffraction

onto the grating. The grating disperses theorder m and N, the number of grooves

radiation into its component wavelengths

being illuminated by the incident radiation.

at different angles in the plane ofR

incidence. The focusing mirror then reforms

mN

the image (of the slit) and focuses it on a

Stray Light

focal plane. The exit slit isolates theGrating stray light is the unwanted

desired spectral band by spatiallyspurious spectral lines arising fromdiscriminating against the unwanted

imperfection in groove profile, spacing andbands as shown. Mechanical rotation of

depth. Holographic gratings exhibit

the grating about its vertical axis scans

superior stray light performance over ruled

the images through the exit slit.
A spectrograph differs from the device

eliminates the error source originating

shown by removing the exit slit, thusfrom the ruling processes and minimizes

allowing a multi-channel array detector tothe manufacturing inconsistency.

be mounted along the focal plane asshown in Figure 11. In this case the array

Practical Grating Instruments
Manyspectrometers,

detector elements see a signal that isincluding

proportional to the amount of themonochromators, and spectrographs

entrance-slit image that falls on theemploy gratings as the dispersing

element. The wavelength ”scanning” iselements. A grating monochromator, foraccomplished by electric read-out means

position.

Grating Spectrometer
Fundamentals
Grating Instrument
Performance Characteristics
Important spectrometer performance
characteristics include wavelength resolution,stray light rejection ratio, throughput andmany others.

example,consists of the following key
elements:

Dispersion

1. An entrance slit

Dispersion of a grating spectrometer2. Collimating/focusing optics

determines its ability to separate

3. A grating dispersing element

wavelengths. The reciprocal linear

4. An exit slit

dispersion of a spectrometer can be found

5. Driving mechanisms

by calculating the change in wavelength λwith respect to change in distance x along

Both monochromators and spectrographs

its focal plane.

share the same optical recipe; they areThat is:usually one-to-one imaging systems inwhich one image of the entrance slit
appears at the exit for each wavelength
passed through the instrument. If theincident radiation is a continuous source,aninfiniteseriesofoverlapping

monochromatic images of the entrance slit
are found at the exit-slit focal plane.
Figure 8 shows a diagram of a typicalmonochromator. The incident radiationconsisting

of

three

wavelengthcomponents enters through an entrance

Figure 11. Diagram of a typical array spectrometerd, βand F are the grating groove spacing,
diffraction angle, and effective systemof the multi-channel detector.

focal length, respectively. Reciprocal

Figure 12 shows a low-pressuremercury

linear dispersion is not a constant; itlamp emission spectrum recorded by anvaries with wavelength as the equationarray spectrometer consisting of 512

shows. The variation can exceed a factor

sensing elements. The detector pixelof two over the useful spectral range. A

numbers can be

mid-value of the dispersion for alinked to wavelengths via a process called

1200g/mm grating, typically at 514.5nm, iscalibration, in which known wavelength

used throughout this catalog.

peaks are used to establish a relationship.

www.spectralproducts.com

Spectrometer Basics

gratings. The use of optical recording

Figure 12. A typical spectrum recordedwith a 512-pixel CCD spectrometer

14

Spectral Products

Resolution
The resolution R of a grating monochromatorand transmission effi ci e n c y - a

Wavelength Precision,
Reproducibility and Accuracy

measure of how much of the input lightexits the monochromator.

is a measure of its ability to separate two

Wavelength precision is the gradation

close together spectral lines. By use ofon the scale that the spectrometer uses in

The etendue of an instrument is theRaleigh criteria

determining wavelength. Nanometers,

product of an instrument’s physicalit is:

angstroms and tenths of angstroms areaperture [cm2] and its angular aperture

typical units of precision. Frequently,[steradians]. For a source of a given

One practical definition for resolution of

precision is a function of wavelength andbrightness [watts/(cm2*steradian)], thea spectrometer is the fullwidth- at-half-

will vary by a factor of three over the

maximum power [watts] that can be coupled

useful spectral range. SP quotes a worst-

into an instrument is the product of thecase precision for each of its instruments.

brightness and the etendue. This is true

maximum (FWHM) measured for a single
monochromatic spectral line. In practice,Spectrometer Basics

the resolution depends upon the resolving

Wavelength reproducibility is the ability

power of the grating, effective systemof a spectrometer, which has been set to

focal length, slit width setting, systema given wavelength, to change settings

optical aberration characteristics andthen return to the original wavelength.

other parameters.

This is a measure of the mechanics of the
wavelength drive and the over-all stability

Because of the dependence of resolution
on the measurement parameters, specificmeasurement methods are used for mostof our discussion in this catalog. Typically,of the instrument. SP’s spectrometers

because the brightness of a sourcecannot be changed; changing theapparent emission angle changes theapparent size in inverse proportion. The
brightness (a Lagrange Invariant) is
unchanged. For a monochromator, theetendue is:
Sw * Sh* Wg2/ F2

have excellent wavelength drives andEmechanical stability; their reproducibility

Where Sw

Slit Width

Sh

Slit Height

Wg

Grating Widthalways exceeds their precision.

resolution is defined as the FWHM
derived from the fewest amount ofsquares fit into a spectral scan assuming
a gaussian profile. Illumination is at514.5nm and is uniform on a 1200g/mm
grating. Entrance and exit slits are.010mm apertures. Obviously, theresolution number resulting from thismeasurement is a guide to performance
only.

Bandpass
Bandpass is the wavelength band

Wavelength accuracy is the difference
betweenthespectrometer's

setwavelength and the true wavelength. It is

In a chain of optics or optical instruments,

not meaningful to apply a wavelength

the component with the smallest etendue

accuracy specification to spectrographs

will determine the etendue of the system.

because a wide band of wavelengths exit

For spectrometers it is useful to find theonto the detector array in a spectrograph.

spectral energy density [watts/nanometer]

In checking wavelength accuracy inthat can be coupled. This can be found by

monochromators, the accuracy must be

dividing the etendue by the spectral

checked against known spectral line

bandwidth:

wavelengths. SP typically checks its

D

E / (Sw / (F * A))

monochromators at 10 to 20 wavelengths

D(Sh / F) * Wg2*A

across the spectral region.

A is the angular dispersion of theexiting the spectrometer at a given
wavelength under conditions where
optical aberrations, diffraction, scanninggrating. The ratio of usable slit height toEtendue andTransmission efficiency

method, detector pixel width, slit height,

The percentage of light that can be sent

uniformity of illumination and the like arefrom a light source through a spectrometer

neglected. (It is then the reciprocal

would be a desirable measure of its

dispersion times the slit width). For

throughput. Unfortunately, the properties

example, a monochromator configuredof sources vary so much that this measurewith 0.25 millimeter slits and a grating

would not provide a useful standard.

displaying a reciprocal dispersion ofInstead, two separate specifications are

8nm/mm has a bandpass

useful; etendue - a measure of theof 8 * 0.25

degree of coupling that can be achieved,

2nm.

F Instrumental Focal Length

focal length is approximately constantacross all monochromators; it is limited by
the aberrations. Therefore, the spectralenergy density depends primarily on thegrating width, and secondarily on thedispersion. To get the maximum throughput,
use the widest highest dispersion grating
available.

Spectral Products

15

Etendue defines the coupling between a

optical instrument. f/# is a useful concept

light originating near the bandpass region

light source and a spectrometer.

in judging optimum coupling between

when using a line source. Due to theTransmission efficiency describes the light

spectrometers and sources or detectors.

simplicity, reliability,and comparability

loss within the spectrometer. The

When f/#s are matched, the full apertureof this measurement method, SP uses thistransmission efficiency becomes:of the spectrometer will be utilized.

method as its stray light measurement.

T(Rm)N * Rg

Unfortunately, there is no agreement in

The second method uses an incandescent

how f/# should be defined for thelamp together with calibrated long and

Where Rm is the reflectance of a single

rectangular optics that appear in mostshort pass blocking filters. This is usefulmirror, N is the number of mirrors and Rg

monochromators. The most conservative

for measuring the contribution of strayis the diffraction efficiency of the grating.

light originating far from the bandpass

width to focal length. Some companies

region when using a continuum source.

protected aluminum mirror. (See the SP

define the ratio as being the diagonal

optics catalog for a spectral profile of themeasurement divided by focal length. SP

reflectance). In a 4-mirror system, about

uses the ratio of the equivalent diameter

70% is transmitted by the mirrors. In a 2-

to focal length where the equivalentmirror system this is about 85%. SP offers

diameter of the rectangular optics is thecustom broadband high reflectancediameter of the circle that has the same

coatings that can boost this efficiency toarea. These are illustrated in the Figure

almost 95% in a 4-mirror system over

13. SP uses this definition because this isabout a wavelength octave.

the point at which the maximum coupling

Grating diffraction is quite complicated;
it is both wavelength and polarization
dependent. Grating diffraction efficiency
for a ruled grating typically reaches 90%
at the blaze wavelength, falling off to 20%
at 0.6 lB and 1.5lB. Holographic gratings
typically have a flatter 30% efficiency.
More information on grating efficiency ispresented in the Selection Guide Section.
Due to the strong wavelength dependenceof diffraction efficiency, SP stocks a wide
variety of diffraction gratings. This allows
good transmission efficiency at any
wavelength.

Throughput
We can get a measure of total spectrometer
throughput per nanometer by multiplying
the spectral energy density by thetransmission efficiency. The result is:occurs between a Lambertian source anda spectrometer.

Spectral Purity, Stray Light,
and their Antecedents:
Rediffracted Light, Secondary
Sources,Higher-Order
Diffraction, Ghosts and Scatter.

Figure 13. The f/# definition used by
SP for rectangular optics

Spectral purity can be defined as theratio of the in-band light passed by thespectrometer to that light transmitted
which falls outside of the selected spectral
band. Stray light is all spurious radiationtransmitted by a spectrometer. The strayradiation sources include rediffracted light,
secondary sources, higher order diffraction,
ghosts, scatters and imperfection in
gratings.
Two methods for stray light measurement
are generally used. The first involves alaser source at a spectrometer entrance

H (Sh/F) * Wg2 * A * (Rm)N * Rg

and the measurement of the exiting
radiation at the peak of the line as well as

The f/#

at five band-passes from the peak. The

The f/# is defined as the ratio ofstray light is then expressed as thediameter to focal length of an optic. It is ainverse ratio of the two values. Thismeasure of the acceptance angle of an

method measures the contribution of straywww.spectralproducts.com

Spectrometer Basics

method defines the f/# to be the ratio of

Mirror reflectance is typically 0.92 for a16Spectral Products

Understanding the Slit Function
As discussed in the previous sections, the width of slits in a spectrometer plays a significant role in determining the instrument’s
bandpass and resolution. Figure 14 shows a“slit function”plot that depicts the spectrometer bandpass characteristics. In most cases
entrance and exit slits are set at the same width. Under the assumption that the magnification of the optics is one, the image of theentrance slit is formed at the exit focal plane at same size as the exit. Now let us introduce monochromatic light at a wavelength of λ0
through the entrance and start rotating the grating for a wavelength scan. The image of the entrance slit will sweep across the exit slit
as is shown in Figure 15.
The light intensity passing through is a function of the overlap of the entrance slit image with the exit slit. At the grating setting where
the image of the entrance does not enter into the exit slit, essentially zero light intensity is exiting. When the image of the entrance slit
is filling up the exit as in Figure 15B, a maximum light intensity passing through is seen. The light intensity will drop to half when theoverlap is only 50% as the cases in Figure 15A and C. The energy distribution curve passing through the exit slit can thus beconstructed as a triangle, Figure 14. This is also referred to as slit function. The bandpass of a spectrometer is conventionally definedas the full width (of wavelength band) measured at half maximum △λ, or FWHM as illustrated in Figure 14. In the situation where theincident radiation is a continuous source, a series of overlapping images of the entrance slit for each wavelength present are found at
the exit focal plane.

The triangular intensity distribution applies in a way that it determines the range of the wavelength passing

Spectrometer Basics

through.

Figure 14. IIIustration of a slit function

Figure 15.Bandpass versus grating settings

Section Ⅱ :DigikromTM‚ Monochromators..

Monochromators
CM110 Compact 1/8 Meter Monochromator
CM112 Compact 1/8 Meter Double Monochromator
Grating for CM Series
CM Series Options and Accessories
DK240

1/4 Meter Monochromator

DK242

1/2 Meter Double Monochromator

DK480

1/2 Meter Monochromator

Gratings for DK Series
DK Series Options and Accessories

18

Spectral Products

CM110 Compact 1/8 Meter Monochromator•ompact size - Only 5-1/4"x3-1/4"x3-1/4"•Connects to any computer via standard RS232 interface.
•Double grating turret allows for a broad spectral range coverage.
•May be factory configured as a monochromator or a spectrograph.
•Scans in both directions and in nanometers, Angstroms, microns, wave-numbers, or eV.
•Change slits on the fly.
•Monochromator may be factory configured for right angle or straight through beam path.
•Suitable for fluorescence, radiometry, process control, colorimetry, tunable filtering, Raman
spectroscopy, among others.

Monochromators

The Leader: Price, Performance, Versatility
Single piece base construction, direct grating drive, and anti-backlash gearing ensure this unit is rugged and stable enough for
demanding applications. Loaded with SP Optics and able to hold two high quality gratings, the CM110 is ideal for spectrometry in the
UV to IR spectra. Each instrument is calibrated and certified prior to delivery and comes with easy-to-use software.

Specifications :FeatureValue

DesignFocal Lengthf/#Beam Path

Czerny Turner, dual grating turrets

Wavelength Drive

FeatureMax Resolution

110mm
3.9
Straight through standard, right angle provided on request.
Worm and wheel with microprocessor control and anti
backlash gearing.
Bi directional. Usable in positive or negative grating orders.

Wavelength Precision
Wavelength Accuracy
Slewing Speed
Stray Light

0.2nm

Software
Power
Interface
Warranty

0.6nm>100nm/second<10 5Standard Set includes; 0.125mm, 0.15mm, 0.30mm,

Slits

Gratings

0.6mm, 1.2mm and 2.4mm x 4.0mm. For other sizes, consult SP.

Ordering Information : Please indicate product number plus description when ordering.
CM110 Compact 1/8meter Monochromator

OptionsValue<1nm w/1200G/mm grating and standard slits
One to two gratings. (30 x 30mm) must be purchased.
See CM grating options page
Demonstration control programand LabView driver included.
UL listed 110/220V power pack
RS232 standard
One year
Hand held control module with function keys and display for
local control
IEEE 488 interface
Interface cables
Gold optics
See options and accessories

Spectral Products

19

CM112 Compact 1/8 Meter Double Monochromator•Compact size - Only 5-1/4"x6-1/4"x3-1/4"•Connects to any computer via RS232.
•Scans in both directions. Programmable in angstroms, nanometers, microns,
wavenumbers, or eV.
•Dual double-grating turrets with automatic grating change allows for broad
spectral range coverage.
•Subtractive dispersion mode minimizes image distortion and pulse spread, with
sub-picosecond residual broadening versus nanosecond pulse broadening of
regular monochromators.
•Additive mode gives increased dispersion and low stray light for Raman andfluorescence studies.
•May be configured as a monochromator or a spectrograph.
•Monochromator may be factory configured for right angle or straight through beam path.

The Digikrom CM112 : Much More than a Monochromator

Specifications :FeatureDesignFocal Lengthf/#Beam Path
Wavelength Drive
Wavelength Precision
Wavelength Accuracy
Max Resolution
Band Pass
Slewing Speed
Stray Light

Value
Double cascaded Czerny Turner, double grating turrets
standard in each section
110mm each section

Feature

Value

Slits

Standard Set includes; 0.125mm, 0.15mm, 0.30mm, 0.6mm,
1.2mm and 2.4mm x 4.0mm. For other sizes, consult SP.

Gratings:

3.9 overall
Straight through standard, right angle provided on request.
Dual worm and wheel with electronic synchronization andcomputer control.

Software:

Two or four gratings (30 x 30mm) must be purchased.
See CM grating options page
Demonstration control programand LabView driver included.

Programable in additive or subtractive dispersion with positiveor negative grating orders.

Power:

UL listed 110/220V power packInterface:

RS232 standard

0.1nm (additive) 0.2nm (subtractive)

Warranty:

One year

Options:

Hand held control module with function keys and display for
local control
IEEE 488 interface
vInterface cables
Gold optics
See options and accessories

0.3nm (additive)

0.6nm (subtractive)<0.5nm (additive) <1nm (subtractive)
0.25nm (additive) 0.50nm (subtractive), w/standard slits>100nm/second<10 9

Ordering Information : Please indicate product number plus description when ordering.
CM112 Compact 1/8meter Double Monochromator

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Monochromators

The CM112 is two single monochromators in series. The exit slit of the first monochromator is the entrance slit of the second. The two
monochromators act as a double filter with the rejection of stray light being almost the square of the single monochromator value.
The CM112 may be factory configured as an additive or subtractive dispersion double monochromator. As an additive instrument, the firstgrating spreads the spectrum over an angular range; the second grating then doubles this dispersion. The result is twice the resolution of asingle 1/8 meter monochromator. As a subtractive instrument, the first monochromator selects a bandpass, the second monochromator thenremoves the temporal and angular aberrations introduced by the angular spectral dispersion in the first monochromator. The CM112 offers asolution to practical problems in monochromatic imaging. Selecting a monochromatic image with an ordinary monochromator fails because
multiple wavelengths in the bandpass create multiple, overlapping images. In the CM112, the second subtractive monochromator
recombines these multiple images, creating a clear image. Finally, the CM112 is a unique solution to practical problems in the spectroscopyof pulsed sources. An ordinary monochromator has a spread in the internal optical path lengths that will introduce a 25 to 100 picosecond
broadening in light pulses that are passed through the monochromator. In the subtractive dispersion CM112, the second monochromatorequalizes the optical path lengths so that broadening is reduced to a minimum.

20

Spectral ProductsStandard Ruled Gratings
for installation in DigikromTM‚ CM110/CM112
Monochromators
CM Standard Ruled Gratings Size = 30 x 30 mm

Monochromators

SP Part #Ruling(g/mm)

Peak(nm)

Range(nm)@ > 30%T

Peak%T

AG2400 00240 303

2400

240

180 68070

AG1200 00200 303

1200

200

180 45065

AG1200 00300 303

1200

300

200 75072

AG1200 00500 303

1200

500

330 1000

83

AG1200 00600 303

1200

600

400 1500

80

AG1200 00750 303

1200

750

480 150085

AG0600 00500 303

600

500

350 130080

AG0600 01200 303

600

1200

800 3000

85

AG0300 00500 303

300

500

310 110080

AG0300 02500 303

300

2500

1500 6000

88

AG0150 00500 303

150

500

320 98072

AG0150 04000 303

150

4000

2500 9000

93

AG0075 01700 303

75

1700

1100 2800

85

AG0075 08000 303

75

8000

5000 15000

82AG0045 01750 303

45

1750

1100 3000

78

See Appendix A for grating efficiency curves
NOTE: Ruled gratings blazed at different wavelengths and Holographic gratings are available on request - call for prices andavailability. Response curves also available upon request.

AG-303-KIT
Backplate mounting kit, required for user installation of CM gratings.

Spectral Products

21

CM series Options and Accessories
DK1201

IR112

Hand-held control module, 2 line x 20 character

For use with CM112. Infrared(gold) coatings on

LCD display. Allows local operation of CM110/112

CM112 mirrors. Enhances transmission by up to 80%

monochromators and CMSP110/112 spectrographs.

between 600 and 1100 nm.

CMGPIB

IR112SPIEEE-488/GPIB option for parallel interface

Same as above, for use with CMSP112.

operation of CM110/112 monochromators and AB300
Series automatic filter wheels.

DK12AT
RS232 Cable for AT style computer

CMGPIB- 220V (220Vac input)
IEEE-488/GPIB option for parallel interface
operation of CM110/112 monochromators and AB300

DK12PS
RS232 Cable for PS2 style computer
Monochromators

Series automatic filter wheels.

DK12MA
CMSP-TO-CM

RS232 Cable for PS2 style computer

Attachment to allow CMSP Spectrograph to operate
as a monochrometor.

AB200
Single filter carrier that mounts directly between CM
unit and accessories

Special Slit Sizes
DKFS010

Pair, 10μm slits

DKFS020

Pair, 20μm slits

DKFS025

Pair, 25μm slits

DKFS050

Pair, 50μm slits

IR110
For use with CM110. Infrared(gold) coatings on
CM110 mirrors. Enhances transmission by up to 40%
between 600 and 1100 nm. Not suitable for work
below 600nm

IR110SP
Same as above, for use with CMSP110.

DK1201 controller

www.spectralproducts.com

22

Spectral Products

DK240 1/4 Meter Monochromator•Connects to any computer via RS232 or IEEE-488.
•Motorized slits.
•Triple-grating turret allows high efficiency scanning across a broad
spectral range.
•May be factory configured as a monochromator or spectrograph.
•Scans in both directions and with Constant Spectral Resolution (CSR).
•Integrates with SP filter wheel for automatic filter switching.
•Suitable for fluorescence and absorption studies, detector
characterization, thin film measurements, etc.

The Workhorse : Direct Digital Drive/Constant Spectral Resolution
The Digikrom DK240 is a complete computer integrated solution. Easy to use commands control the triple grating turret, motorized
slits, and optional motorized filter wheel for quick and easy sorting. Instrument mode can be set for constant spectral resolution
Monochromators(CSR), where the slit width is automatically modified to compensate in the change in dispersion with wavelength to maintain constant
spectral bandpass.
Rugged cast construction, A-Thermal design, and SP direct grating drive make this unit the most repeatable and reliable in its class.
Each instrument is calibrated and certified prior to delivery.

Specifications :FeatureDesignFocal Lengthf/#Reciprocal Dispersion
Wavelength Drive

Value
Czerny Turner, triple grating turrets standard.
240mm
3.9
3.2nm/mm (with 1200 g/mm grating)Worm and wheel with microprocessor control and anti
backlash gearing.
Bi directional. Usable in positive or negative grating orders.

Wavelength Precisionand reproducibility
Wavelength Accuracy
Scan Speed
Stray Light

0.007nm (with 1200g/mm grating)

Max Resolution

One to three gratings (68 x 68mm standard, 68 x 84mm
optional) must be purchased. See DK Gratings.

SoftwareDemonstration control program and LabView driver included.

Power

0.06nm (with 1200 g/mm grating)Ordering Information : Please indicate product number plus description when ordering.
DK240 1/4meter Monochromator

220/230/240V, 50/60Hz @ 0.5A optional.
RS232 standard

Warranty

One year

35lbs

IDKBS Bi lateral slits
IDKGPIB IEEE 488 communication interface (internal)
IDK2400 and Hand held controllers for local control< 0.01% at 220nm (Nal)Width 10μm to 3000μm

100 240V, 50/60Hz, 60W

Interface
Weight1 to 1200nm/minute (with 1200g.mm grating)

Height 2mm to 20mm

Value

Gratings

0.30nm standard (with 1200g/mm grating)

Unilateral, computer controlled, curved entrance and straight
exit standard.

Slits

FeatureIIR240 Gold optics

Options

IDK2PORT Bifurcated fiber bundle for attaching 2 devices
to 1 port.
IAB300 Automated 6 position filter wheel
See options and accessories

Spectral Products

23

DK242 1/4 Meter Double Monochromator•Internal controller connects to any computer via RS232 or IEEE-488.
Hands-off control of three slit assemblies and two grating turrets.
•Scans in both directions and with Constant Spectral Resolution (CSR).
•Triple-grating turrets allows high efficiency scanning across a broad
spectral range.
•Additive dispersion increases resolution and reduces stray light for
Raman and fluorescence studies, subtractive dispersion minimizes
broadening of pulse sources.
•Integrates with SP filter wheel for automatic filter switching.
•May be factory configured as a monochromator or spectrograph.

The Pioneer : Better Resolution, Stray Light Control

Specifications :FeatureDesignFocal Lengthf/#Reciprocal Dispersion

Wavelength Drive

Value

FeatureDouble cascaded Czerny Turner.

Gratings<0.04nm (additive) 0.06nm (subtractive)

Software

Two to six gratings (68 x 68mm standard, 68 x 84mm optional)
must be purchased. See DK Gratings.

Power

Demonstration control program and LabView driver included.

Triple grating turrets standard in each section.
240mm each section
3.9 overall
1.60nm/mm (additive)(with 1200 g/mm grating)

Value

Interface

Dual worm and wheel with electronic synchronization andcomputer control.

110 / 120V, 50/60Hz @ 1A standard. 220/230/240V, 50/60Hz@ 0.5A optional.

Weight

RS232 standard

Programmable in additive or subtractive dispersion

Warranty

One year

Programmable in additive or subtractive dispersion

Wavelength Precision
Wavelength Accuracy
Scan Speed
Stray Light

0.01nm (additive) 0.01nm (subtractive)< 10 9Width 10μm to 3000μm
Height 2mm to 20mm

Pulse Broadening

DKGPIB IEEE 488 communication interface (internal)
DK2400 and Hand held controllers for local control>1 to 1200nm/minute (with 1200g.mm grating)

Unilateral, computer controlled, curved entrance and straight
exit standard.

Slits

DKBS Bi lateral slits

0.30nm standard (with 1200 g/mm grating)

OptionsIR240 Gold optics
DK2PORT Bifurcated fiber bundle for attaching 2 devices
to 1 port.
AB300 Automated 6 position filter wheel
See options and accessories

200 ps max (additive) 10 fs max (subtractive)

Ordering Information : Please indicate product number plus description when ordering.
DK242 1/4meter Double Monochromator

www.spectralproducts.com

Monochromators

The DK242 is two cascaded monochromators, with the exit slit of the first monochromator functioning as the entrance slit of the second. This instrument may befactory configured to operate as either an additive or subtractive dispersion double monochromator. In both modes, the two monochromators act as a double
filter with the rejection of stray light being nearly the square of the single monochromator value. In the additive dispersion mode, the DK242 is the equivalent ofa half-meter monochromator, but permits greater reduction of stray light. The first grating spreads the spectrum over an angular range; the second grating thendoubles this dispersion. The result is twice the resolution of a single 1/4-meter monochromator. In subtractive dispersion mode the first monochromator selects
a bandpass. The second monochromator then removes the temporal and angular aberrations introduced by the angular spectral dispersion in the firstmonochromator. The DK242 offers a unique solution to practical problems in the spectroscopy of pulsed sources. For example, an ordinary monochromator will
introduce up to 250 pico second broadening in light pulses that are passed through the monochromator. Operated in the subtractive dispersion mode, theDK242 reduces this broadening to almost zero because the second monochromator equalizes the optical path length of the first. The DK242 is also a uniquesolution to the practical problems of Raman spectroscopy because the high stray light rejection of the two monochromators allows observation close to thelaser line. SP's unique CSR scanning technology also improves efficiency in the red and near IR while maintaining resolution. (In the CSR mode, themonochromator's change in dispersion with wavelength is compensated by a change in slit widths while bandpass remains constant. Intensity improvement up
to 4x can occur). Equipped with SP's Direct Digital Drive, the DK242 is a complete computer-controlled instrument. The control electronics are internal,
calibration is automatic. Any computer can control the DK242 through its RS232 interface with simple commands (shown in all capital letters) to direct the
monochromator to GO TO a wavelength, to SCAN between wavelengths at a preset SPEED, to SELECT gratings, or to report its STATUS.

24

Spectral Products

DK480 1/2 Meter Monochromator•Connects to any computer via RS232 or IEEE-488.
•Motorized slits.
•Triple-grating turret allows high efficiency scanning across a broad spectral range.
•May be factory configured as a monochromator or spectrograph.
•Scans in both directions and with Constant Spectral Resolution (CSR)•Integrates with AB300 for automatic filter switching. AB300 is controlled by monochromator•Suitable for fluorescence and absorption studies, detector characterization, thin film measurements, etc.

Monochromators

Wavelength Selection is No Longer Expensive
The Digikrom DK480 is a complete computer integrated solution. Easy to use commands control the tripple grating turret,motorized slits, and optional motorized filter wheel for quick and easy sorting. Instrument mode can be set for constant spectral
resolution (CSR), where the slit width is automatically modified to compensate in the change in dispersion with wavelength tomaintain constant spectral bandpass.
Rugged cast construction, a thermal design, and SP direct grating drive make this unit the most repaetable and reliable in its class.
Each instrument is calibrated and certified prior to delivery.

For DK480 models, for a ful list of gratins see Appendix A
Gratinggroove/mm

1200

600

150

wavelength(nm)

Dispersion
nm/mm

Resolution* (nm)/slit
0.01mm0.125mm

200

3.5

0.05

0.2

800

3.3

0.05

0.2

1500

1.9

<0.05

0.1

200

6.9

0.1

0.5

1500

6.6

0.1

0.4

3000

3.8

0.05

0.2

200

27.5

0.4

2

5000

27.1

0.3

2

10000

21.2

0.3

1

※ approximately equivalent to bandpass

Spectral Products

25

Monochromators

Specifications :FeatureDesignFocal Lengthf/#Reciprocal Dispersion
Wavelength Drive

Value
Czerny Turner, triple grating turrets standard.

FeatureValue

SoftwareDemonstration control program and LabView driver included.

480mm
7.8
1.60nm/mm (with 1200 g/mm grating)Worm and wheel with microprocessor control and anti
backlash gearing.

Power
Interface
WeightWarranty

100 240V, 50/60Hz, 60W
220/230/240V, 50/60Hz @ 0.5A optional.
RS232 standard
45lbs
One year

Bi directional. Usable in positive or negative grating orders.

Wavelength Precisionand reproducibility
Wavelength Accuracy
Scan Speed
Stray Light

Slits

0.007nm (with 1200g/mm grating)
DKBS Bi lateral slits
0.30nm standard (with 1200 g/mm grating)

Gratings

DK2400 and Hand held controllers for local control< 0.01% at 220nm (Nal)
Unilateral, computer controlled, curved entrance and straight
exit standard.
Width 10μm to 3000μm
Height 2mm to 20mm

Max Resolution

DKGPIB IEEE 488 communication interface (internal)

1 to 1200nm/minute (with 1200g.mm grating)

IR480 Gold optics

Options

DK2PORT Bifurcated fiber bundle for attaching 2 devices
to 1 port.
AB300 Automated 6 position filter wheel
See options and accessories

0.03nm (with 1200 g/mm grating)
One to three gratings (68 x 68mm standard, 68 x 84mm
optional) must be purchased. See DK Gratings.

Ordering Information : Please indicate product number plus description when ordering
DK242 1/2 meter Monochromator

www.spectralproducts.com

26

Spectral ProductsStandard Ruled Gratings..
for installation in Digikrom DK series
Monochromators
DK Standard Ruled Gratings Size = 68 x 68 mm
SP Part #Ruling(g/mm)

Peak(nm)

Range(nm)@ > 30%T

Peak%T

SP Part #Ruling(g/mm)

Peak(nm)

Range(nm)@ > 30%T

Peak%T

AG2400 00240 686

2400

240

180 68070AG0600 01600 686

600

1600

950 3000

93

AG1200 00200 686

1200

200

180 45065

AG0300 00500 686

300

500

310 1100

80

AG1200 00250 686

1200

250

180 46070

AG0300 02000 686

300

2000

1200 4000

88

AG1200 00300 686

1200

300

200 75072

AG0300 02500 686

300

2500

1500 6000

88

AG1200 00500 686

1200

500

330 1000

83

AG0300 03000 686

300

3000

1800 6000

80

Monochromators

AG1200 00600 686

1200

600

400 150080

AG0150 00500 686

150

500

320 98072

AG1200 00750 686

1200

750

480 150085

AG0150 04000 686

150

4000

2500 9000

93

AG1200 01000 686

1200

1000

550 1500

75

AG0075 08000 686

75

8000

5000 15000

82

AG0600 00500 686

600

500

350 130080AG0050 00600 686

50

600

400 120078

AG0600 01200 686

600

1200

800 3000

85

AG0050 12000 686

50

12000

7500 20000

82

See Appendix A for grating efficiency curves

NOTE: Ruled gratings blazed at different wavelengths and Holographic gratings are available on request - call for prices andavailability.
Wide gratings (68 x 84mm) are available at 40% above list price, add “W”at the end of the part number.
Response curves also available on request.

AG-686-KIT
Backplate mounting kit, required for user installation of DK gratings.

DK Series Options and Accessories
DKBS
Bi-lateral slit option for DK240/ 242/480.
Both sides of slits are automatically controlled
for maintaining image centering when wider
slits are necessary (tolerance ± 10μm)

DKGPIB
Internal IEEE-488/GPIB communicationinterface option for DK240/242/480. Separate
output connector from Monochromator.

IR242SP
Same as above, for use with DKSP242.

AB300

For use with DK480. Infrared (gold) coatings
on optics for DK480. Enhances transmission
by up to 40% between 600 -1100nm.

wheel assembly that bolts directly to DK

IR480SP

directly through DK unit. See page 92 for more

Same as above, for use with DKSP480.

DK2401For use with DK240. Infrared (gold) coatings
on optics for DK240. Enhances transmission
by up to 40% between 600 -1100nm. Not
suitable for work below 600nm.

Hand-held monochromator controller for
DK240/242/480. Allows local control ofmonochromator when computer is notavailable or in series with a computer.

IR240SPDK24PS

IR242
For use with DK242. Infrared (gold) coatings
on optics for DK242. Enhances transmission
by up to 80% between 600 - 1100nm.

IEEE-488/GPIB universal cable assembly.

IR480

IR240

Same as above, for use with DKSP240.

DK24IC

RS232 Cable assembly for PS/2 stylecomputer.

DK24MARS232 Cable assembly for MAC stylecomputerSix position, 1”diameter automatic filter
entrance. Recieves power and commands
information.

DKSP-TO-DK
Attachment to allow DKSP Spectrograph tooperate as a monochrometor. It includes CM
standard 6-fixed slit set (page 17).

AB200
Single filter carrier that mounts directly
between DK unit and accessories

Section Ⅲ : SM Series Spectrometers

OEM & Preconfigured Spectrometer
SM200 / SM400 OEM Package CCD Spectrometer
SM242 / SM442 Preconfigured High Resolution Compact CCD Spectrometer
Hand-Held Spectrometer
SM240 / SM440 Hand-Held CCD Spectrometer
High Speed UV-VIS-NIR Spectrometer
SM245 Low Noise Compact CCD Spectrometer
SM255 Economical CCD Spectrometer
SM520 / SM540 High Resolution CCD Spectrometer
SM642 Low Noise Non TE-Cooled Backthinned Spectrometer
SM303 High Performance TE-Cooled Backthinned Spectrometer
NIR Spectrometer
SM241 NIR Laser CCD Spectrometer
SM304 Near-Infrared InGaAs Spectrometer
SM301 / SM301-EX PbS/ PbSe NIR Spectrometer
High Resolution Low Noise Spectrometer
SM642-HRS
SM303-HRS
Options / Accessories
SoftwareSpecial Coating Optionst

28

Spectral Products

SM200 / SM400
OEM CCD Spectrometer•Best performance cost ratio in the industry•Designed from the ground up for OEM integration•Small impact resistant optical bench•Flexible light input direct to slit or via fiber.
•Fully customizable.
•Sony ILX511 CCD for SM200 or Toshiba TCD1304 CCD for SM400 allows up to a 900 nm measurement window between 200nm
and 1050nm (800 nm measurement window size possible for some applications)•USB 1.1 and 2.0 interface with 16-bit dynamic range available!
•Support up to 8 USB multi-channel configuration•NEW UV enhancing coating

Spectrometers

The Choice for Intergation with OEM Products
The SM200/SM400 is a miniature spectrometer designed for custom OEM applications. It offers a high performance to cost ratio for new
systems designs. It can accept light directly through its built in slit or via optical fiber. A removable fiber coupler faceplate allows use ofstandard SMA 905, FC and custom fiber connectors. This faceplate also allows direct attachment to dedicated systems and a number of
SMX Accessories. A durable aluminum housing encloses the SM200/SM400 optical bench; through careful design this housing provides
stable device operation over a wide range of temperatures.
The spectrometer sensor array and array driver electronics are mounted inside the SM200/SM400 housing, from there a flex cable connects
to exterior support electronics. The standard sensor array used is the Sony ILX511 for SM200 and the Toshiba TCD1304 for SM400. The
driver electronics have been designed for highly sensitive yet stable operation. The design of the SM200/SM400 also allows the use ofcustom arrays for special applications, including photodiode assemblies and alternative CCD arrays, as well as the use of customer's own
data acquisition electronics instead of using SP's.
Standard interfaces to the SM200/SM400 include a USB 2.0 interface with 16 bit extended dynamic range and a PCI card interface with 16
bit dynamic range sampling. Our USB board can support multichannel configuration up to 8. With this multichannel configuration, a highresolution for wide range or a dual spectrometer system (one for measurement and the other for reference) is possible.
Spectral Products applies new UV enhancing coating on the CCD to increase the UV sensitivity below 450nm comparing with theconventional UV coating that is widely used in CCD spectrometers. By the help of this new UV coating, the signal sensitivity below 500nm
can get improved ~20 50% more in general.
Software support includes custom DLLs for dedicated applications development and our SM32Pro windows based spectral acquisition andanalysis software. Both standard and legacy interface designs provide support for advanced acquisition programming and external triggering.

Spectral Products

29

Specifications :Feature

Value
SM200
Sony ILX511

Detectors

Number of Pixels : 3648

Sensing Pixel Size : 14μm X 200μm

Sensing Pixel Size : 8μm X 200μm

Sensitivity : 200V/(lx s) under 3200K uniform illumination

Sensitivity :160V/(lx s) under daylight fluorescent illumination

2.7

Dark Noise RMS<50 RMS counts in 16bit @ 35msec integration time

Fiber Coupler
Effective Spectral Range

Toshiba TCD 1304

Number of Pixels : 2048

Spectrograph f#

Signal to Noise Ratio

SM400

250:1
SMA905 or FC standard
200 to 1050nm

Order Sorting Filter

Long pass filter or linear variable filter installed per wavelength coverage

Spectral Resolution

0.3~10nm FWHM
<0.05% at 632nm (<0.1% overall)Computer interface

USB 1.1/2.0 compatible
PCI bus NI PCI 16bit 250KHz

Minimum integration time
Trigger Mode
Dimensions (inches)
WeightSoftwareSpectrometers

Stray Light

1msec
Free Run Mode
External Trigger Mode
97mm X 68mm X 23mm (3.83 X 2.67 X 0.93)
0.2kg
SM32Pro (free with spectrometer)
Includes DLL libraries and SDKs for easy custom application development 0.5kg

Ordering Information : Please indicate product number plus description when ordering
SM200 OEM CCD Spectrometer
SM400 OEM CCD Spectrometer

www.spectralproducts.com

30

Spectral Products

SM242 / SM442
Preconfigured CCD Spectrometer•New compact, pre-configured model•Can be handheld or securely mounted•Flexible optical input direct to slit or via fiber•Designed from the ground up for a wide range of applications•Impact resistant housing•High performance electronics•Standard design allows up to 200-1050nm range•Support up to 8 USB multi-channel configuration•NEW UV enhancing coating

Spectrometers

The Choice for Spectral Applications
The SM242/SM442 is a new compact design CCD Spectrometer for use with a PC. Based on SP's special optical bench design, it
supports many different applications where spectral or color measurements are required, including high dynamic range applications.
The SM242/SM442 can accept light directly through its built-in slit or via optical fiber. The durable aluminum housing that encloses
the SM242/SM442 provides stable optical bench operation over a wide range of temperatures. The standard sensor arrays used are
the Sony ILX 511 for SM240 and the Toshiba TCD1304 for the SM440. The array driver electronics have been designed for highly
sensitive yet stable operation. This array (in conjunction with our special UV coating process and customized order sorting filters)
allows up to a 850nm measurement window from 200nm to 1050nm (smaller measurement window sizes increase spectral
resolution and light sensitivity). Thanks to the more pixel numbers, the SM442 is more preferable for the applications requiring higher
resolution. The better sensitivity of the CCD makes the SM242 more suitable for the applications with lower light signals.
Standard interface to the SM242/SM442 is a USB 1.1/2.0 compatible interface with 16-bit extended dynamic range. Our USB board
can support multichannel configuration up to 8. With this multichannel configuration, a higher resolution for wide range or a dual
spectrometer system (one for measurement and the other for reference) is possible. Spectral Products applies new UV enhancing
coating on the CCD to increase the UV sensitivity below 450nm comparing with the conventional UV coating that is widely used in
CCD spectrometers. By the help of this new UV coating, the signal sensitivity below 500nm can get improved ~20-50% more in
general. The SM242/SM442 is a pre-configured model so if the desired wavelength range matches one of the standard wavelength
ranges, SP can ship the unit within a couple of days. Software support includes a SDK and DLLs for dedicated applications
development and our SM32Pro Windows-based spectral acquisition and analysis software.

Spectral Products

31

Software•SM32Pro - WindowsⓇ

95, 2000, XP, 7 based software (supporting 32bit & 64bit) for data acquisition and analysis•Transmission, reflectance, and absorbance measurements•Data export, zoom in and out, spectrum overlays, and many more features•Color analysis tools included•Signal average and integration time control•DLL libraries available for easy user software development in DOS and WindowsⓇ•VC++/VB/Labview examples available

Specifications :Feature

Value
SM242
Sony ILX 511

Toshiba TCD 1304

Number of Pixels : 2048

Number of Pixels : 3648

Sensing Pixel Size : 14μm X 200μm

Sensing Pixel Size : 8μm x 200μm

Sensitivity : 200V/(lx s) under 3200K uniform
illumination

Sensitivity : 160 V/(lx s) under daylight fluorescentillumination

Spectrograph f#

2.7

Dark Noise RMS<50 RMS counts in 16bit @ 35msec integration time

Signal to Noise Ratio
Fiber Coupler
Effective Spectral Range

250:1
SMA905 or FC standard
200 to 1050nm

Order Sorting Filter

Long pass filter or linear variable filter installed per wavelength coverage

Spectral Resolution

0.25~10nm FWHM

Stray Light
Computer interface
Minimum integration time
Trigger Mode
Dimensions (inches)
WeightSoftware<0.05% at 632nm (<0.1% overall)
USB 1.1/2.0 compatible
PCI bus NI PCI 16bit 500KHz
8msec (General Mode), 0.01msec (Shutter Mode)
Free Run Mode
External Trigger Mode
97mm X 66mm X 47mm (3.82 X 2.6 X 1.86)
0.4kg
SM32Pro (free with spectrometer)
Includes DLL libraries and SDKs for easy custom application development

Ordering Information : Please indicate product number plus description when ordering
SM442 Preconfigured Compact CCD Spectrometer

www.spectralproducts.com

Spectrometers

Detectors

SM442

32

Spectral Products

SM240 / SM440
Hand-Held CCD Spectrometer•Compact system, can be handheld or securely mounted•Flexible optical input direct to slit or via fiber•Designed from the ground up for applications•Impact resistant housing•High performance electronics•Standard design allows up to a 850nm measurement window between 200nm and 1050nm•USB 1.1 and 2.0 interface with 16-bit dynamic range available!
•Support up to 8 USB multi-channel configuration•NEW UV enhancing coating

Spectrometers

The Choice for Spectral Applications
The SM240/SM440 is a compact CCD Spectrometer for use with a PC. Based on the SM200/SM400 optical bench design, it supports manydifferent applications where spectral or color measurements are required, including high dynamic range applications.
The SM240/SM440 can accept light directly through its built in slit or via optical fiber. The durable aluminum housing that encloses theSM240/SM440 provides stable optical bench operation over a wide range of temperatures.
The standard sensor arrays used are the Sony ILX 511 for SM240 and the Toshiba TCD1304 for the SM440. The array driver electronics
have been designed for highly sensitive yet stable operation. These arrays (in conjunction with our special UV coating process and custom
order sorting filters) allow up to a 850nm measurement window located from 200nm to 1050nm (smaller measurement window sizes increase
spectral resolution and light sensitivity). Standard interfaces to the SM240/SM440 include a USB 2.0 interface and a PCI card interface with
16 bit dynamic range. Our USB board can support multichannel configuration up to 8. With this multichannel configuration, a high resolution
for wide range or a dual spectrometer system (one for measurement and the other for reference) is possible. Spectral Products applies new
UV enhancing coating on the CCD to increase the UV sensitivity below 450nm comparing with the conventional UV coating that is widelyused in CCD spectrometers. By the help of this new UV coating, the signal sensitivity below 500nm can get improved ~20 50% more in
general. The black anodized housing is available for OEM customers who are using the unit as it is with no need to install the optical bench
and the electronic board separately (like SM200/SM400) in their systems. The electronic board is secured in the housing of theSM240/SM440, which is better for the electronic noise protection.
Software support includes a SDK and DLLs for dedicated applications development and our SM32Pro Windows based spectral acquisition
and analysis software. Both standard and legacy interface designs provide support for advanced acquisition programming and external
triggering.

Spectral Products

33

Software•SM32Pro - WindowsⓇ

98, 2000, XP, 7 based software (supporting 32bit & 64bit) for data acquisition and analysi•Transmission, reflectance, and absorbance measurements•Data export, zoom in and out, spectrum overlays, and many more features•Color analysis tools included•Signal average and integration time control•DLL libraries available for easy user software development inⓇ
DOS and Windows•VC++/VB/Labview examples available

Specifications :Feature

Value
SM240

Detectors

Number of Pixels : 3648

Sensing Pixel Size : 14μm X 200μm

Sensing Pixel Size : 8μm X 200μm

Sensitivity : 200V/(lx s) under 3200K uniform illumination

Sensitivity :160V/(lx s) under daylight fluorescent illumination

Spectrograph f#

2.7

Dark Noise RMS<50 RMS counts in 16bit @ 35msec integration time

Signal to Noise Ratio
Fiber Coupler
Effective Spectral Range

Toshiba TCD 1304

Number of Pixels : 2048

250:1
SMA905 or FC standard
200 to 1050nm

Order Sorting Filter

Long pass filter or linear variable filter installed per wavelength coverage

Spectral Resolution

0.3 ~10nm FWHM

Stray Light
Computer interface
Minimum integration time
Trigger Mode
Dimensions (inches)
WeightSoftware0.25 ~ 10nm FWHM

<0.05% at 632nm (<0.1% overall)
USB 1.1/2.0 compatible
PCI bus NI PCI 16bit 250KHz
1msec
Free Run Mode
External Trigger Mode
142mm X 73mm X 25mm (5.59 X 2.87 X 0.98)
0.4kg
SM32Pro (free with spectrometer)
Includes DLL libraries and SDKs for easy custom application development 0.5kg

Ordering Information : Please indicate product number plus description when ordering
SM240 Hand Held CCD Spectromete
SM440 Hand Held CCD Spectrometewww.spectralproducts.com

Spectrometers

Sony ILX511

SM440

34

Spectral Products

SM245
Low Noise Compact CCD Spectrometer•Low dark noise and stray light•Flexible optical input direct to slit or via fiber•Designed from the ground up for a wide range of applications•High speed data acquisition•Standard design allows up to 200-1050nm range•USB 1.1/2.0 interface with 16bit•Supports up to 8 USB multi-channel configuration•NEW UV enhancing coating

Spectrometers

The Choice for high speed data acquisition Applications
Spectral Products is offering the new SM245 high speed 2048 pixel array CCD spectrometer. Thanks to the enhanced design on theelectronic board of the SM245, the dark current noise level as well as the data acquisition speed have improved. Based on SP's special
optical bench design, it supports many different applications where spectral or color measurements are required, including high speed dataacquisition.
The SM245 can accept light directly through its built in slit or via optical fiber. The durable aluminum housing that encloses the SM245
provides stable optical bench operation over a wide range of temperatures. This array (in conjunction with our special UV coating process
and customized order sorting filters) allows up to a 850nm measurement window from 200nm to 1050nm (smaller measurement window
sizes increase spectral resolution and light sensitivity).
Standard interface to the SM642 is a USB 1.1/2.0 compatible interface with 16 bit. Our USB board can support multichannel configuration up
to 8. With this multichannel configuration, a high resolution for wide range or a dual spectrometer system (one for measurement and theother for reference) is possible.
Spectral Products applies new UV enhancing coating on the CCD to increase the UV sensitivity below 450nm comparing with theconventional UV coating that is widely used in CCD spectrometers. By the help of this new UV coating, the signal sensitivity below 500nm
can get improved ~20 50% more in general.
Software support includes a SDK and DLLs for dedicated applications development and our SM32Pro Windows based spectral acquisition
and analysis software.

Spectral Products

35

Software•SM32Pro - WindowsⓇ

95, 2000, XP, 7 based software (supporting 32bit & 64bit) for data acquisition and analysis•Transmission, reflectance, and absorbance measurements•Data export, zoom in and out, spectrum overlays, and many more features•Color analysis tools included•Signal average and integration time control•DLL libraries available for easy user software development in DOS and WindowsⓇ•VC++/VB/Labview examples available

Specifications :FeatureValue
Sony ILX511 CCD
Number of Pixels : 2048
Sensing Pixel Size : 14μm X 200μm

Spectrometers

Detectors

Sensitivity :180V/(lx s)@660nm
Well depth : 62,500e

Spectrograph f#

2.7

Dark Noise RMS< 35 RMS counts in 16bit @35msec integration time

Signal to Noise Ratio
Fiber Coupler
Effective Spectral Range>250: 1
SMA905 or FC standard
200 to 1050nm

Order Sorting Filter

Longpass filter or linear variable filter installed per wavelength coverage

Spectral Resolution

0.3 ~ 10nm FWHM

Stray Light
Computer interface
Minimum integration time
Trigger Mode
Dimensions (inches)
WeightSoftware<0.3% at 632nm (<0.1% Ave)
USB 1.1/2.0 compatible
1msec
Free Run Mode
Software Trigger Mode
External trigger mode
152mm X 83mm X 49mm (5.98 X 3.28 X 1.93)
0.6kg
SM32Pro (free with spectrometer)
Includes DLL libraries and SDKs for easy custom application development 0.5kg

Ordering Information : Please indicate product number plus description when ordering
SM245 Low Noise Compact CCD Spectrometer

www.spectralproducts.com

36

Spectral Products

SM255
Economical CCD Spectrometer•New compact, Economical pre-configured model•Can be handheld or securely mounted•Flexible optical input direct to slit or via fiber•Designed from the ground up for a wide range of applications•Impact resistant housing•High performance electronics

Spectrometers

The Choice for economic solution on Spectral Applications
The SM255 is a new compact CCD Spectrometer for users who are looking for an economical solution with a limited budget. Based on SP's
special optical bench design, it supports many different applications where spectral or color measurements are required.
The SM255 can accept light directly through its built in slit or via optical fiber. The durable aluminum housing that encloses the SM255
provides stable optical bench operation over a wide range of temperatures.
The standard sensor arrays used are the Sony ILX 511 for SM255. The array driver electronics have been designed for highly sensitive yetstable operation. Spectral Products applies a standard UV coating on the CCD to use down to 200nm. This array in conjunction with thestandard UV coating and customized order sorting filter allows the two most popular covering ranges, 200 900nm and 380 760nm.
Standard interface to the SM255 is a USB 1.1/2.0 compatible interface with 16 bit extended dynamic range. The USB board used in theSM255 does not support multichannel configuration but just single channel mode. However, most applications that just need a single
spectrometer will be fine with this model.
Software support includes SDK examples and DLL for dedicated applications development and our SM32Pro Windows based spectral
acquisition and analysis software.

Spectral Products

37

Software•SM32Pro - WindowsⓇ

95, 2000, XP, 7 based software (supporting 32bit & 64bit) for data acquisition and analysis•Transmission, reflectance, and absorbance measurements•Data export, zoom in and out, spectrum overlays, and many more features•Color analysis tools included•Signal average and integration time control•DLL libraries available for easy user software development in DOS and WindowsⓇ•VC++/VB/Labview examples available

Specifications :FeatureValue
Sony ILX511

Detectors

Number of Pixels : 2048

Spectrometers

Sensing Pixel Size : 14μm x 200μm
Sensitivity : 200V/(lx s) under 3200K uniform illumination

Spectrograph f#

2.7

Dark Noise RMS<50 RMS counts in 16bit @35msec integration time

Signal to Noise Ratio
Fiber Coupler

250:1
SMA905 or FC standard
380 760nm (SM255 VIS)

Effective Spectral Range

200 900nm (SM255 UVR)

Order Sorting Filter

Long pass filter or linear variable filter installed

Spectral Resolution~0.5nm for SM255 VIS, ~1.2nm for SM255 UVRStray Light
Computer interface
Minimum integration time

<0.05% @ 632nm (<0.1% overall)
USB 1.1/2.0 16 bit 500KHz
1msec
Free Run Mode

Trigger Mode
Dimensions (inches)
WeightSoftwareExternal Trigger Mode
97mm X 66mm X 47mm (3.82 X 2.6 X 1.86)
0.4kg
SM32Pro (free with spectrometer)
Includes DLL libraries and SDKs for easy custom application development

Ordering Information : Please indicate product number plus description when ordering.
SM255

Economical CCD Spectrometer

www.spectralproducts.com

38

Spectral Products

SM520 / SM540
High Resolution CCD Spectrometer•Optical input direct to slit or via fiber•Allows higher resolution spectral measurements in up
to a 700nm measurement window between 200nm and1050nm - double the resolution of the SM200 and SM240•USB 2.0 interface with 16-bit dynamic range available•Support up to 8 USB multi-channel configuration•NEW UV enhancing coating

Spectrometers

The Choice for High resolution Spectral Applications
The SM540 is a CCD based spectrometer that offers more than double the resolution of the SM440. This resolution is achieved using
oversized (30mm x 30mm) optical bench components. These components offer approximately four times the effective collimation, grating
and focusing area than what is used in the SM400 and SM440. As with all spectrometers, effective resolution increases as window size
decreases. A 100 nm window will have approximately 0.05nm resolution (as opposed to 0.15nm for the SM400 and SM440). The larger
optical bench of the SM540 makes it possible to have a narrow window size in NIR and get a higher resolution, which is basically impossible
in the smaller optical benches like the SM400/SM440 due to the limitation of the grating diffraction angle.
Standard interfaces include a USB 2.0 interface and a PCI card interface with 16 bit extended dynamic range. Our USB board can support
multichannel configuration up to 8. With this multichannel configuration, a high resolution for wide range or a dual spectrometer system (onefor measurement and the other for reference) is possible.
Spectral Products applies new UV enhancing coating on the CCD to increase the UV sensitivity below 450nm comparing with theconventional UV coating that is widely used in CCD spectrometers. By the help of this new UV coating, the signal sensitivity below 500nm
can get improved ~20 50% more in general.
Software support includes a SDK and DLLs for dedicated applications development and our SM32Pro Windows based spectral acquisition
and analysis software. Both standard and legacy interface designs provide support for advanced acquisition programming and external
triggering.

Spectral Products

39

Software• SM32Pro - WindowsⓇ

98, 2000, XP, 7 based software (supporting 32bit & 64bit) for data acquisition and analysis• Transmission, reflectance and absorbance measurements• Data export, zoom in and out, spectrum overlays and many more features• Color analysis tools included• Signal average and integration time control• SDK and DLLs abailable for easy custom software development

Specifications :Feature

Value
SM520
Sony ILX511

Number of Pixels: 3648

Sensing Pixel Size : 14μm x 200μm

Sensing Pixel Size : 8μm x 200μm

Sensitivity : 200V/(lx s) under 3200K uniform
illumination

Sensitivity : 160 V/(lx s) under daylight fluoresecent
illumination

Spectrograph f#

3.9

Dark Noise RMS<50 RMS counts in 16bit @35msec integration time

Signal to Noise Ratio
Fiber Couple

Toshiba TCD1304

Number of Pixels : 2048

250:1
SMA905 or FC standard

Effective Spectral Range

200 to 1050nm

Order Sorting Filter

Long pass filter or linear variable filter installed per wavelength coverage

Spectral Resolution

0.15 ~ 10nm FWHM

Stray Light<0.05% @ 632nm (<0.1% overall)
USB 1.1/2.0 compatible

Computer interface
PCI bus NI PCI 16 bit 500KHz

Minimum integration time
Trigger Mode

1msec
Free Run Mode
External Trigger Mode

Dimensions (inches)
WeightSoftware177.8mm X 171.45mm X 76.2mm (7.0 X 6.75 X 3.0)
1.8kg
SM32Pro (free with spectrometer)
Includes DLL libraries and SDKs for easy custom application development

Ordering Information : Please indicate product number plus description when ordering.
SM540

High Resolution CCD Spectrometer

www.spectralproducts.com

Spectrometers

Detectors

SM540

40

Spectral Products

SM642
Low Noise Non TE-Cooled Backthinned Spectrometer•Scientific-grade high performance with low cost
•Low dark noise and stray light•Good dynamic range and high signal to noise ratio•High Ultra-violet Quantum efficiency•Flexible optical input direct to slit or via fiber•Designed from the ground up for a wide range of applications•High speed data acquisition•Standard design allows up to 200-1050nm range

Spectrometers

The Choice for Low Signal Level Applications
Spectral Products is offering the new SM642 non TE cooled back-thinned 2048 pixel array CCD spectrometer. The SM642 provides
high quantum efficiency in UV and high dynamic range. The detector used in the SM642 has 2048 pixels and helps to get better
resolution. It is ideal for UV/VIS/NIR spectrometry that requires high signal to noise ratio and/or high dynamic range. The back-thinned
CCD has excellent sensitivity in UV and allows deep UV application, even below 200nm. Well designed housing allows a widemeasurement window like from 200nm to 1050nm (smaller measurement window sizes increase spectral resolution and lightsensitivity) with low stray light. Standard interface to the SM642 is a USB 1.1/2.0 compatible interface with 16-bit.
Software support includes a SDK and DLLs for dedicated applications development and our SM32Pro Windows-based spectral
acquisition and analysis software.

Spectral Products

41

Software•SM32Pro - WindowsⓇ

95, 2000, XP, 7 based software (supporting 32bit & 64bit) for data acquisition and analysis•Transmission, reflectance, and absorbance measurements•Data export, zoom in and out, spectrum overlays, and many more features•Color analysis tools included•Signal average and integration time control•DLL libraries available for easy user software development in DOS and WindowsⓇ•VC++/VB/Labview examples available

Specifications :FeatureValue
Hamamatsu S10420 1106 10 non TE Cooled backthinned CCD
Spectrometers

umber of Pixels: 2048 X 64
Sensing Pixel Size : 14μm X 14μm

Detectors

Pixel well depth :200Ke
Quantum efficiency : >90% @650nm, 65% @250nm

Spectrograph f#

3.3

Dark Noise RMS<7 RMS counts in 16bit @35msec integration time

Signal to Noise Ratio
Fiber Coupler
Effective Spectral Range

450 : 1
SMA905 or FC standard
200 to 1050nm

Order Sorting Filter

Long pass filter or linear variable filter installed per wavelength coverage

Spectral Resolution

0.25 ~ 7nm FWHM

Stray Light
Computer interface
Minimum integration time
Trigger Mode
Dimensions (inches)<0.01% at 632nm (<0.5% Ave)
USB 1.1/2.0 compatible
7msec
Free Run Mode
Software Trigger Mode
External trigger mode(9 pin connector) : TTL Edge trigger input/digital output for monitoring
200mm X 130mm X 73.5mm (7.87 X 5.12 X 2.83)

Weight1.5kg

Software

SM32Pro (free with spectrometer)
Includes DLL libraries and SDKs for easy custom application development 0.5kg

Ordering Information : Please indicate product number plus description when ordering
SM642 Low Noise Non TE Cooled Backthinned Spectrometer

www.spectralproducts.com

42

Spectral Products

SM303
High Performance TE-Cooled Backthinned Spectrometer•Scientific-grade high performance•Extremely low dark noise and stray light•Wide dynamic range and high signal to noise ratio•High Ultra-violet Quantum efficiency•Flexible optical input direct to slit or via fiber•Designed from the ground up for a wide range of applications•High speed data acquisition•Standard design allows up to 200-1050nm range

Spectrometers

The Choice for Low Signal Level Applications
Spectral Products is offering the new SM303 TE cooled back-thinned 1024 pixel array CCD spectrometer. The SM303 is ideal for
UV/VIS/NIR spectrometry that requires very high signal to noise ratio and/or high dynamic range, like fluorescence, Rama, LEDproperty testing applications. The back-thinned CCD has excellent sensitivity in UV and allows deep UV application. Well designed
housing allows up to a 850nm measurement window from 200nm to 1050nm (smaller measurement window sizes increase spectral
resolution and light sensitivity) with very low stray light. The TE cooled detecor also help to measure very low light signals by reducing
the noise level in long integration times. Thanks to the hidynamic range and the low noise, the SM303 is also ideal for radiometricmeasurement applications. Standard interface to the SM303-Si is a USB 1.1/2.0 compatible interface with 16-bit.
Software support includes a SDK and DLLs for dedicated applications development and our SM32Pro Windows-based spectral
acquisition and analysis software.

Spectral Products

43

Software•SM32Pro - WindowsⓇ

95, 2000, XP, 7 based software (supporting 32bit & 64bit) for data acquisition and analysis•Transmission, reflectance, and absorbance measurements•Data export, zoom in and out, spectrum overlays, and many more features•Color analysis tools included•Signal average and integration time control•DLL libraries available for easy user software development in DOS and WindowsⓇ•VC++/VB/Labview examples available

Specifications :FeatureValue
Hamamatsu S7031 1006S TE Cooled backthinned CCD
umber of Pixels: 1024 X 58

Spectrometers

Sensing Pixel Size : 24μm X 24μm

Detectors

Pixel well depth :300Ke (Vertical) 600 Ke (Horizontal)
Quantum efficiency : >90% @650nm, 65% @250nm
Sensitivity : ~0.065 counts/e
Cooling : One stage TE Cooled ( 10 )Spectrograph f#

3.3

Dark Noise RMS<2 RMS counts in 16bit @35msec integration time

Signal to Noise Ratio
Fiber Coupler
Effective Spectral Range

1000 : 1
SMA905 or FC standard
200 to 1050nm

Order Sorting Filter

Long pass filter or linear variable filter installed per wavelength coverage

Spectral Resolution

0.3 ~ 7nm FWHM

Stray Light
Computer interface
Minimum integration time
Trigger Mode
Dimensions (inches)
WeightSoftware<0.01% at 632nm (<0.05% Ave)
USB 1.1/2.0 compatible
7msec
Free Run Mode
Software Trigger Mode
External trigger mode(9 pin connector) : TTL Edge trigger input/digital output for monitoring
232mm X 130mm X 90.5mm (9.13 X 5.11 X 3.56)
2.7kg
SM32Pro (free with spectrometer)
Includes DLL libraries and SDKs for easy custom application development 0.5kg

Ordering Information : Please indicate product number plus description when ordering
SM303 High Performance TE Cooled Backthinned Spectrometer

www.spectralproducts.com

44

Spectral Products

SM241
NIR Laser CCD Spectrometer•Less expensive alternative to Germanium or InGaAs systems•Compact system, can be handheld or securely mounted•Flexible optical input direct to slit or via fiber•High performance electronics•Allows spectral measurements between 900nm and 1700nm•USB 2.0 interface with 16-bit dynamic range available!
•Support up to 8 multi-channel configuration

Spectrometers

The Choice for Spectral NIR Laser Applications
The SM241 is a compact CCD based Spectrometer designed for NIR laser applications. Spectral Products' IR up-conversion phosphor
CCD coating breaks the standard Silicon-based CCD detectors array sensitivity barrier of 1100nm to allow spectral measurements up
to 1700nm. This technology makes the SM241 a lower cost alternative to Germanium or InGaAs systems. The SM241 optical bench
includes oversized gold plated mirrors and gratings to accommodate NIR light collection and analysis. Maximum spectral coverage withthis spectrometer is 900 nm to 1700 nm (reduced coverage window size within 900-1700nm will increase spectral resolution and lightsensitivity). But although the SM241 can measure up to 1700nm, due to its low sensitivity, it is limited only to use in the applications
measuring very narrow band-width and strong lights like lasers in this NIR range. Standard interfaces include a USB 2.0 interface anda PCI card interface with a 16-bit extended dynamic range.
Software support includes a SDK and DLLs for dedicated applications development and our SM32Pro windows based spectral
acquisition and analysis software. Both standard and legacy interface designs provide support for advanced acquisition programmingand external triggering.

Spectral Products

45

Software•SM32Pro - WindowsⓇ

95, 2000, XP, 7 based software (supporting 32bit & 64bit) for data acquisition and analysis•Transmission, reflectance, and absorbance measurements•Data export, zoom in and out, spectrum overlays, and many more features•Color analysis tools included•Signal average and integration time control•DLL libraries available for easy user software development in DOS and WindowsⓇ•VC++/VB/Labview examples available

Specifications :FeatureValue

Spectrometers

Sony ILX511
Number of Pixels : 2048

Detectors

Sensing Pixel Size :14μm X 200μm
Sensitivity :30 V/mJ/cm2

Spectrograph f#

3.5

Dark Noise RMS<50 RMS counts in 16bit @ 35msec integration time

Signal to Noise Ratio
Fiber Coupler
Effective Spectral Range

250:1
SMA905 or FC standard
900 to 1700nm

Order Sorting Filter

Long pass filter or linear variable filter installed per wavelength coverage

Spectral Resolution

5nm with standard slit configuration

Stray Light
Computer interface
Minimum integration time
Trigger Mode
Dimensions (inches)
WeightSoftwarebetter than 10 3
USB 1.1/2.0 compatible
PCI bus NI PCI 16bit 250KHz
1msec
Free Run Mode
External Trigger Mode
121mm X 121mm X 54mm (4.75 X 4.75 X 2.11)
0.7kg
SM32Pro (free with spectrometer)
Includes DLL libraries and SDKs for easy custom application development 0.5kg

Ordering Information : Please indicate product number plus description when ordering
SM241 NIR Laser CCD Spectrometer

www.spectralproducts.com

46

Spectral Products

SM304
Near-Infrared InGaAs Spectrometer•Scientific-grade high performance•Extremely low dark noise and stray light•Wide dynamic range and high signal to noise ratio•High stability•Flexible optical input direct to slit or via fiber•Designed from the ground up for a wide range of applications•High speed data acquisition•Various NIR range from 900nm to 2500nm

Spectrometers

The Choice for Low Signal Level NIR Applications
Spectral Products is offering the new SM304 TE cooled InGaAs array spectrometers. The SM304 series are ideal for NIR spectrometrythat requires very high signal to noise ratio and/or high dynamic rang. The high performance with low-noise level of the SM304 series
makes it possible to apply in very demanding applications. The good sensitivity of the detectors used in the SM304 series allows
various broad-band applications like, measuring optical properties of various samples in NIR range, analyzing chemicals/moisturedetection, as well as a narrow band applications like NIR laser characterization. Standard interface to the SM304 series is a USB
1.1/2.0 compatible interface with 16-bit.
Software support includes a SDK and DLLs for dedicated applications development and our SM32Pro Windows-based spectral
acquisition and analysis software.

Spectral Products

47

Software•SM32Pro - WindowsⓇ

95, 2000, XP, 7 based software (supporting 32bit & 64bit) for data acquisition and analysis•Transmission, reflectance, and absorbance measurements•Data export, zoom in and out, spectrum overlays, and many more features•Signal average and integration time control•DLL libraries available for easy user software development in DOS and WindowsⓇ•VC++/VB/Labview examples available

Specifications :FeatureValue
SM304 512

SM304 512 2.2

SM304 512 2.5

SM304 256 2.1

SM304 256 2.5

Detectors

G9204 512

G9206 512

G9208 512

G9206 256

G9208 256

Pixel Size

25 X 500μm

25 X 250μm

Spectrograph f#

3.3

Dark Noise RMS<10 RMS counts in 16bit @35msec integration time

Signal to Noise Ratio
Fiber Coupler
Effective Spectral
Range>15,000:1 @100msec

50 X 500μm>10,000:1 @100msec

SMA905 or FC standard
0.9 1.7μm

0.9 2.2μm

0.9 2.5μm

Order Sorting Filter

Longpass filter or linear variable filter installed per wavelength coverage

Spectral Resolution>3nm overall

Stray Light
Computer interface
Minimum integration time
Trigger Mode
Dimensions (inches)
WeightSoftware>7,500:1 @10msec>5nm overall>6.5nm overall

0.9 2.05μm

0.9 2.5μm>7nm overall>9nm overall<0.01% at 632nm (<0.05% Ave)
USB 1.1/2.0 compatible
1msec
Free Run Mode
Software Trigger Mode
External trigger mode (9 pin connector) : TTL Edge trigger input/digital output for monitoring
232mm X 130mm X 90.5mm (9.13 X 5.11 X 3.56)
2.7kg
SM32Pro (free with spectrometer)
Includes DLL libraries and SDKs for easy custom application development 0.5kg

Ordering Information : Please indicate product number plus description when ordering
SM304-512 Near Infrared InGaAs Spectrometer
SM304-512-2.2 Near Infrared InGaAs Spectrometer
SM304-512-2.5 Near Infrared InGaAs Spectrometer
SM304-256-2.1 Near Infrared InGaAs Spectrometer
SM304-256-2.5 Near Infrared InGaAs Spectrometer

www.spectralproducts.com

Spectrometers

Model

48

Spectral Products

SM301/SM301-EX
PbS/ PbSe NIR Spectrometer•Low Noise•Cooled, Stable Operation•256 Detection Elements•Accommodates spectral measurements in the 1.0 to 3.0 micron (PbS) or 1.5 to 5.0 micron (PbSe) region•Optical input direct to slit or via fiber

Spectrometers

The Choice for NIR Spectral Applications
The SM301/SM301-EX is a versatile, high performance PbS/PbSe array spectrometer. Its active components include a TE cooler anda 256-element PbS/PbSe detector element array. Operation of the unit for research applications is easy with the included SM32Pro Windows based analysis software. The system is ideal for spectroscopic applications in the 1.0 to 3.0 micron (PbS) or 1.5 to 5.0 micron(PbSe) region. The SM301/SM301-EX includes thermoelectric cooling to guarantee long-term operational stability. The SM301/SM301EX employs a multiplexed PbS/PbSe array as its NIR detection element. The array is cooled and temperature stabilized at around 4oC which ensures long-term operation stability. Dark signal can thus be automatically measured by the built-in electronics periodicallyand subtracted automatically. Compared with conventional scanning NIR spectrometers the SM301/SM301-EX provides the multichannel detection advantage, both in reducing the measurement time and enhancing measurement signal-to-noise ratio. The
SM301/SM301-EX can operate at a readout rate of 2MHz or faster allowing fast measurement and averaging operation to be
performed in a short period of time.

Spectral Products

49

Software•SM32Pro - WindowsⓇ

95, 2000, XP, 7 based software (supporting 32bit & 64bit) for data acquisition and analysis•Transmission, reflectance, and absorbance measurements•Data export, zoom in and out, spectrum overlays, and many more features•Signal average and integration time control•DLL libraries available for easy user software development in DOS and WindowsⓇ•VC++/VB/Labview examples available

Specifications :Feature

Value
SM301
PbS

PbSe

Number of Pixels: 256

Number of Pixels : 256

Sensing Pixel Size: 45µm x 450µm

Sensing Pixel Size : 45µm x 450µm

Peak Detectivity (D*): 1x1011cmHz0 5 W 1Peak Detectivity (D*) :1x1010cmHz0 5 W 1

Pixel Clock: 2MHz max. for 4MHz data output

Pixel Clock: 2MHz max. for 4MHz data output

Linearity: >90%

Linearity: >90%

Response uniformity(peak to peak):±10% of array single mean

Response uniformity(peak to peak) : ±10% of array single mean

Spectrograph f#

3.5

Dark Noise RMS~20 RMS counts in 16bit (After Balancing)

Fiber Coupler

SMA905 or FC standard

Effective Spectral Range

1.0 to 3.0μm / 1.0 ~ 2.0um

1.5 to 5.0μm~20nm (1.0~3.0um) / 10nm (1.0~2.0um)~20nm (1.5~5.0um)

Spectral Resolution
Stray Light
Computer interface

Better than 0.1%
USB 1.1/2.0 compatible

Minimum integration time

0.01 to 200msec (on board)

TE Cooling temperature

4

Dimensions (inches)

ARO

146mm X 95mm X 81mm (5.75 X 3.75 X 3.17)

Weight1.5kg

Software

SM32Pro (free with spectrometer)
Includes DLL libraries and SDKs for easy custom application development 0.5kg

Ordering Information : Please indicate product number plus description when ordering
SM301 PbS NIR Spectrometer
SM301-EX PbSe NIR Spectrometer

www.spectralproducts.com

Spectrometers

Detectors

SM301-EX

50

Spectral Products

SM642-HRSHigh Resolution Low Noise Spectrometer•High resolution optical bench•Scientific-grade high performance with low cost
•Low dark noise and stray light•Good dynamic range and high signal to noise ratio•High Ultra-violet Quantum efficiency•Flexible optical input direct to slit or via fiber•Designed from the ground up for a wide range of applications•High speed data acquisition•Standard design allows up to 200-1050nm range

Spectrometers

The Choice for Low Signal Level Applications
Spectral Products is offering the new SM642 non TE cooled back-thinned 2048?pixel array CCD spectrometer. The SM642 provides
high quantum efficiency in UV and high dynamic range. The detector used in the SM642-HRS has 2048 pixels and helps to get better
resolution. It is ideal for UV/VIS/NIR spectrometry that requires high signal to noise ratio and/or high dynamic range. The back-thinned
CCD has excellent sensitivity in UV and allows deep UV application, even below 200nm. Well designed housing allows up to 75nm
measurement window within 200~1050nm for 0.2nm optical resolution with very low stray light. The backthinned detector to measurevery low light signal by reducing the noise level in long integration timeSpectral Products

51

Software•SM32Pro - WindowsⓇ

95, 2000, XP, 7 based software (supporting 32bit & 64bit) for data acquisition and analysis•Transmission, reflectance, and absorbance measurements•Data export, zoom in and out, spectrum overlays, and many more features•Color analysis tools included•Signal average and integration time control•DLL libraries available for easy user software development in DOS and WindowsⓇ•VC++/VB/Labview examples available

Specifications :FeatureValue
Spectrometers

Hamamatsu S10420 1106 10 non TE Cooled backthinned CCD
Number of Pixels : 2048 X 64

Detectors

Sensing Pixel Size :14μm X 14μm
Pixel well depth: 200Ke
Quantum efficiency: >90% @650nm, 65% @250nm

Spectrograph f#

3.3

Dark Noise RMS<7 RMS counts in 16bit @35msec integration time

Signal to Noise Ratio
Fiber Coupler
Effective Spectral Range

450 : 1
SMA905 or FC standard
75nm measurement window within 200~1050nm

Order Sorting Filter

Long pass filter or linear variable filter installed per wavelength coverage

Spectral Resolution

0.1 to 7nm depending on the slit and grating choices

Stray Light
Computer interface
Minimum integration time

Trigger Mode

Dimensions(inches)<0.01% at 632nm (<0.05% Ave)
USB 1.1/2.0 compatible
7msec
Free Run Mode
Software Trigger Mode
External trigger mode(9 pin connector) : TTL Edge trigger input/digital output for monitoring
220mm X 175mm X 85.5mm (8.66 X 6.88 X 3.37)

Weight3.0kg

Software

SM32Pro (free with spectrometer)
Includes DLL libraries and SDKs for easy custom application development 0.5kg

Ordering Information : Please indicate product number plus description when ordering
SM642-HRS High Resolution Low Noise Spectrometer

www.spectralproducts.com

52

Spectral Products

SM303-HRSHigh Resolution Low Noise Spectrometer•High resolution optical bench•Scientific-grade high performance•Extremely low dark noise and stray light•Wide dynamic range and high signal to noise ratio•High Ultra-violet Quantum efficiency•Flexible optical input direct to slit or via fiber•Designed from the ground up for a wide range of applications•High speed data acquisition•Standard design allows up to 200-1050nm range

Spectrometers

The Choice for Low Signal Level Applications
Spectral Products is offering the new SM303 TE cooled back-thinned 1024 pixel array CCD spectrometer. The SM303 is ideal for
UV/VIS/NIR spectrometry that requires very high signal to noise ratio and/or high dynamic range, like fluorescence, Raman, LEDproperty testing applications. The back-thinned CCD has excellent sensitivity in UV and allows deep UV application. Well designed
housing allows up to 75nm measurement window within 200~1050nm for 0.2nm optical resolution with very low stray light. The TE
cooled detector also help to measure very low light signal by reducing the noise level in long integration timeSpectral Products

53

Software•SM32Pro - WindowsⓇ

95, 2000, XP, 7 based software (supporting 32bit & 64bit) for data acquisition and analysis•Transmission, reflectance, and absorbance measurements•Data export, zoom in and out, spectrum overlays, and many more features•Color analysis tools included•Signal average and integration time control•DLL libraries available for easy user software development in DOS and WindowsⓇ•VC++/VB/Labview examples available

Specifications :FeatureValue
Hamamatsu S7031 1006S back thinned CCD
Spectrometers

Number of Pixels : 1024 X 58
Sensing Pixel Size :24μm X 24μm

Detectors

Pixel well depth: 300Ke (Vertical) 600 Ke (Horizontal)
Quantum efficiency: >90% @650nm, 65% @250nm
Sensitivity: ~0.065 counts/e
Cooling: One stage TE Cooled ( 10 )Spectrograph f#

3.3

Dark Noise RMS<2 RMS counts in 16bit @35msec integration timeSignal to Noise Ratio

Signal to Noise Ratio
Fiber Coupler
Effective Spectral Range

1000 : 1
SMA905 or FC standard
75nm measurement window within 200~1050nm

Order Sorting Filter

Long pass filter or linear variable filter installed per wavelength coverage

Spectral Resolution

0.2 to 7nm depending on the slit and grating choices

Stray Light
Computer interface
Minimum integration time

Trigger Mode

Dimensions (inches)<0.01% at 632nm (<0.05% Ave)
USB 1.1/2.0 compatible
7msec
Free Run Mode
Software Trigger Mode
External trigger mode(9 pin connector) : TTL Edge trigger input/digital output for monitoring
235mm X 176.5mm X 95.3mm (9.25 X 6.95 X 3.75)

Weight3.7kg

Software

SM32Pro (free with spectrometer)
Includes DLL libraries and SDKs for easy custom application development 0.5kg

Ordering Information : Please indicate product number plus description when ordering
SM303-HRS High Resolution Spectrometer

www.spectralproducts.com

54

Spectral Products

SM32Pro Software•Displays percent of reflectance.
•Calculates XYZ, Yxy, L*a*b*, L*C*h°, △L*a*b*, △L*C*h*, △ELab and △ECMC•Illuminant conditions A and D65.
•CIE 2°and 10°standard observers.
•View up to 6 reflectance traces on a single graph, with multiple graphs
tiled on a single screen.
•Prints in color or black & white.
•Offers easy custom wavelength calibration function.
•Control signal averages and integration time
•Save color files, export color files, and print color matching files.
•Exports graph or data to other WindowsTM‚ software and to most DOS
software.

Software•Has rubber-band zoom and auto-peak find.
•Features intuitive menu system and tool bars.
Spectrometers•Includes comprehensive documentation•32-bit Windows? SDK software and LabView developer libraries are available.

SM32ProGeneral-purpose data acquisition and processing software for SM200, SM240, SM241, SM520, and SM301 units. SM32Pro allows
Reflectance,Transmission and Absorbance measurements. Additionally CIE color values such as X Y Z, and Lab, may be obtainedusing A and D 65 illuminant conditions with the software package. Data may be saved as a graph, or exported to ASCII text files forimport to spreadsheet applications for further analysis. Graphing functions include zooming, basic text annotation, and plot overlays
on a single graph. Color values may be compared to a user selectable standard in order to obtain Delta values. Spectrometer
calibration can be handled easily through use of the software combined with a traceable light source.

SM32Pro SDK, 32/64 Bit
Available for customers who wish to use SM hardware with custom designed software. The SDKs are available in 32-bit formats,and include our dynamic linked libraries in addition to several various code samples (VC++, VB and LabView) on how to use thefunctions the DLLs contain. A manual that details the functions available is also included.

Spectral Products

55

Spectrometer Options/Accessories
Spectral Products provides a wide selection of various options/accessories for SP's spectrometers. Some useful accessories forvarious applications are available on "Sampling Accessories" section in catagories.

1. A/D Cards, USB2.0 Converters and Cables
NI PCI-6023E/NI DAQCard-6024E (PCMCIA)
16 analog inputs at 200 kS/s, 12-bit resolution
Up to 2 analog outputs, 12-bit resolution
8 digital I/O lines (5 V/TTL/CMOS); two 24-bit counter/timers
Digital triggering
4 analog input signal ranges
NI-DAQ driver simplifies configuration and measurements
USB2.0 PCI/PCMCIA Cards

USB External Trigger Cable

SM-OSF : Order Sorting Filter, SP's order sorting filter consistsof various combinations of 250nm/300nm/440nm/590nm/780nm
long pass filters. The broadband spectrum showed a strange dipor peak at the junction part of each filter before. But with the useof SP's unique technique, the induced dip or peak at the junction
part was removed (except the junction part of the deep UV of
below 250nm & UV/VIS range). Considering the lower sensitivityof the CCD (Sony ILX511) in UV and NIR range, SP also offers
varius partially anti-reflection coated substrates.
SM-OSF2 : 2 position order sorting filter. Ex, 350nm ~ 800nm
SM-OSF2-UV : 2 position order sorting filter, UV quartz
substrates. Ex, 300nm ~ 700nm
SM-OSF2-AUV : 2 position order sorting filter, UV AR coatedquartz substrates. Ex, 250nm ~ 850nm

BNC type connector

SM-OSF2-ADU : 2 position order sorting filter, Deep UV AR
coated quartz substrates. Ex, 200nm ~ 600nm

2. Inside Options

SM-OSF2-AIR : 2 position order sorting filter, NIR AR coatedquartz substrates. Ex, 450nm ~ 1000nm

SM-QZWIN : Quartz (Fused Silica) CCD Window, The detector's
standard window (BK7) is replaced with a quartz (fusted silica)
window for UV (200nm ~ 350nm) applications.

SM-OSF3 : 3 position order sorting filter. Ex, 350nm ~ 1050nm

SM-ARWIN : Anti-Reflection coated CCD Window, AR coating
will reduce the reflectance and enhance the tranmittanceefficiency of the CCD window in given wavelength range. Toview the reflectance curve of each AR coating, Click Here.

SM-OSF3-AUV : 3 position order sorting filter, UV AR coatedquartz substrates. Ex, 250nm ~ 1050nm

DU : Deep UV range (200nm ~ 250nm)
UV : UV range(250nm ~ 400nm)
VS : Visible range, Shorter(320nm ~ 600nm)
VL : Visible range, Longer(400nm ~ 700nm)
IS : NIR range, Shorter(650nm ~ 1100nm)
IL : NIR range, Longer(1050nm ~ 1700nm)
SM-CCD-UV/SM-CCD-NIR : UV/NIR enhancing coating on
CCD, SP's UV/IR up-conversion phosphor CCD coating breaks
the standard Silicon-based CCD detectors array sensitivity
barrier of 400~1100nm to allow spectral measurements down to
200nm (UV application) or up to 1700nm (NIR application,
SM241).
UV/NIR coated CCDs and cylidrical focusing lens
SM-AT-F1 : CCD Decter Array Focusing Lens, SP's cylindricalUV grade fused silia (quartz) lens increases light-collection
efficiency.
SM-SLT : Entrance Slits, SP provides various widths and 1mm

SM-OSF3-UV : 3 position order sorting filter, UV quartz
substrates. Ex, 300nm ~ 1000nm

SM-OSF3-ADU : 3 position order sorting filter, Deep UV AR
coated quartz substrates. Ex, 200nm ~ 850nm
SM-OSF3-AIR : 3 position order sorting filter, NIR AR coatedquartz substrates. Ex, 400nm ~ 1050nm
SM-OSF3-AUN : 3 position order sorting filter, UV & NIR partial
AR coated quartz substrates. Ex, 200nm ~ 850nm, 250nm ~950nm
SM-OSF4-UV : 4 position order sorting filter, UV quartz
substrates. Ex, 200nm ~ 950nm
SM-OSF4-ADU : 4 position order sorting filter, Deep UV AR
coated quartz substrates. Ex, 200nm ~ 950nm
SM-OSF4-AUN : 4 position order sorting filter, UV & NIR partial
AR coated quartz substrates. Ex, 200nm ~ 1050nm
SM-LPF : Long Pass Filters, SP's long pass filter is installed
permanently in the SMA 905/FC connector (face plate) of SM
series spectrometers. Various long pass filters are available
from 280nm to 1000nm .
SM-EQF : CCD System Equalizer Filter, SP's equalizer filter
flattens the general intensity distribution of CCD detector.

www.spectralproducts.com

Spectrometers

Hi-Speed USB 2.0 Adapter support for Mac OS X v10.1,
Windows 98SE/Me/2000/XP.
Up to 480 Mbps of data transfer rate; 40 time faster than USB
1.1 (11Mbps) device.
Fully backward compatible with older 12 Mbps USB devices.

tall slits. The standard widths are 10um, 25um, 50um, 100um,
200um and 400um.

56

Spectral Products

Special Coating Options
SP's pioneering coating technologies also allow us to take another step further to reduce energy lost between optical surfaces. For
customers' special applications, SP provides special coating options.
SM-PG600 : Special Gold Coating on mirror optics installed in spectrometer to enhance the reflectance (R>95%) in 600nm ~ range.
SM-PS400 : Special Silver Coating on mirror optics installed in spectrometer to enhance the reflectance (R>95%) in 380nm ~ range.
SM-BBDS3501100 : Special BBDS Coating on mirror optics installed in spectrometer to enhance the reflectance (R>98.5%) in
350nm ~ 1100nm.
Anti-Reflection Coating Options : SP provides various Anti-Reflection coating options. This coating helps to enhace the transmittanceefficiency of focusing lens or CCD window. Typical reflectance of optics is ~4% per each interfacing
surface but this AR coating will reduce the reflectance less than 0.5% (at normal incidence).
DU : Deep UV range (200nm ~ 250nm), UV : UV range(250nm ~ 400nm), VS : Visible range, Shorter(320nm ~ 600nm),
VL : Visible range, Longer(400nm ~ 700nm), IS : NIR range, Shorter(650nm ~ 1100nm), IL : NIR range, Longer(1050nm ~ 1700nm)

Spectrometers

Spectrometer Interface

Section Ⅳ : AD Series Detection Systems

AD Series Detection Systems
AD111

Photobyte - PTM‚ PMT Detection System

AD131

Photodetector Module

SP800

800Hz Optical Chopper

58

Spectral Products

AD111
Photobyte - PTM Photomultiplier Detection System•Provides a complete detection system for SP ’s Digikrom monochromators.
•Easy USB2.0 interface.
•Wide selection of PMT’s.

Detection Systems

Data Acquisition ScreenShot

Compact, Convenient, Affordable
The AD111 is a convenient computer controlled photomultiplier detection system for use with Spectral Products Digikrom line ofmonochromators. It features a detector housing that has a dynode divider chain and direct anode connection, mounts directly to exitslit ports of Digikrom monochromators, and accommodates side-on photomultiplier tubes. (PMT ’s must be ordered separately.) It
also features the Photomultiplier Amplifier, a compact electronic unit containing the preamplifier and high voltage power supply for
the PMT. Coaxial cables for the high voltage and PMT output current signals connect between the detector housing and the amplifier
unit. The entire operation, including wavelength and bandpass selection, is controlled with a customer-supplied PC. (The Digikrom
monochromator and the AD111 utilize one serial for monochromator and one USB port for AD111) An easy to use program is also
included that allows full control of both PMT and monochromator. It graphically displays wavelength versus intensity, intensity versus
time and allows ASCII data storage for importing to other user interfaces as desired.

Spectral Products

59

SP offers the following PMTs foruse with the AD110
AP Part#
Code

PMT
Type

Wavelength Range andSpectral Response

AD311

R928P

185 900nm;
S 20 (extended)

AD321

R 212

185 650nm; S 5

AD322

R 406

400 1100nm; S 1

AD323

R 777

185 850nm; S 20

AD324

R 636

185 930nm;
GaAs (extended)* selected for low noise

Other PMTs are available from SP by request

Specifications :FeatureValue

Wavelength Range

Per PMT detector (see below)

High Voltage Rang

0 1000 VDCOrdering Information :Please indicate product number plus description when ordering.
AD111 Photobyte PTM‚ Photomultiplier Detection System
AD100 PMT Housing, for 1 1/8”side on PMTs from

A/D Resolution

16 bit (Successive Approximation)

Response Rate

USB2.0High Voltage Resolution

244mV

Input Voltage± 5 VDC

AD323 PMT Type R 777

Data Resolution

76.3μV, (data range = 0 5V)

AD324 PMT Type R 636

Time Constant per step

Selectable from 1μS to 10 sec

AD3xx series
AD311 PMT Type R 928
AD321 PMT Type R 212
AD322 PMT Type R 406

Conversion time2μ
S (Maximum)USB 2.0 Transfer Rate

480 Mbits/sec

Amplification Gains

x1 to x10 (programmable)

Supply Voltage
Current Input Range

100 240 VAC
0 to 5μA

www.spectralproducts.com

Detection Systems

Typical Photocathode Spectral Response Characteristics

60

Spectral Products

AD131
Photodetector Module 190nm to 4.8μm•Combines SP photodiode detector, programmable charge integrator, anddata conversion in a compact package.
•Expandible with add-on modules for cooled sensor capability.
•Null function for background noise subtraction.
•Programmable gain ranges.
•WindowsⓇ based data acquisition software included.
•Easy to install and use on any SP Monochromator•Internal data averaging.

Compact, Convenient, Affordable
The AD131 is a computer controlled data acquisition device for photodiodedetectors, covering a wide wavelength range with Si, InGaAs, PbS, and PbSe
Detection Systems

photocells from the AD4x series. The unit contains an internal programmablecharge integration amplifier, a 20-bit A/D converter, and a microprocessor with a
RS232 interface. Signal processing functions take place internal to the AD131 togreatly reduce the noise level of the measured signal, including Correlated Double
Sampling (CDS) and signal oversampling for digital filtering. WindowsⓇ based
software allows for stand-alone operation or integrated control and dataacquisition with any of the Digikrom line of monochromators. Adding the AD131TC Thermoelectric Controller module to the AD131 enables the use of AD4x
series heads with cooling capability (designated by a "-C" on the model name).
AD4x heads are easily exchanged on the same AD131 unit.

Data Acquisition ScreenShot

SP Part #Detecter Type

Size

Range

Temp

Sensitivity

Dark resistanceor current

AD421

Si

5.8 x 5.8

190 1000

25

0.4 A/W at 720 nm

20 pA

AD427*

PbS

3x3

1000 2900

25

5 x 104 V/W at 2200 nm

0.5 to 2.5 M

AD429*

PbSe

3x3

1500 4800

25

5 x 102 at 40.3 to 1.5 M

AD430

InGaAs3 dia

800 1700250.95 A/W at 1.55

15 nA

Si / InGaAs

25

0.45 A/W at 0.94

30 pA

AD431

25

0.55 A/W at 1.55

1 nA

2.4 x 2.4

300 1700

1 dia

The following require the AD131 TC Thermoelectric Controller module in addition to the AD131 Photodetector module
AD427 C*

Cooled PbS

4x51000 2900

10

8 x 104 V/W at 2.2

0.5 to 10 M

AD429 C*

Cooled PbSe

3x3

1500 4800

10

1 x 103 at 4

1.7 to 7 M

AD430 C

Cooled InGaAS

3 dia

800 1700100.95 A/W at 1.55

1 nA

25

0.45(2530 pA

2.4 x 2.4
AD431 C

Cooled Si/ InGaAS

300 1700
1 dia* Requires 450 Hz chopped optical signal

at 0.9410

0.55 at 1.55

0.07 nA

Spectral Products

61

Typical Spectral Response
Characteristics

Detection Systems

Specifications :Value

FeatureOrdering Information: Please indicate product number plus
description when ordering.

Wavelength Range :A/D Resolution :Depends on Sensor type16 bitA/D Conversion Rate :500kSPS

Response Rate :USB 2.0

Time Constant :10μS, 100μS, 1mS, 10mS (selectable)

Low Pass Filter :1/3Hz, 1Hz, 10Hz, 100Hz (selectable)

Phase Shift :Amplification Gain :Phase Lock Loop Voltage
Input :

0 180 degrees (selectable)
x1 to x10 (selectable)
0 5V optical chopper reference signal

Trigger Input Voltage :0 5Vdc TTL

Supply Voltage :100 240 Vac

USB2.0 Transfer Rate :480 Mbits/S

Software :Windows Ⓡ control program for standalone use or integrated with SP Monochromators.

AD131

Photodetector Module

AD131-220V Photodetector Module (220VAC input)
AD131-TC

T hermoelectric Controller Module(order detector heads separately)
AD421

Detector Head Type - Si

AD427

Detector Head Type - PbS

AD429

Detector Head Type - PbSe

AD430

Detector Head Type - InGaAs

AD431

Detector Head Type - Si/InGaAs

The following detector heads are for use with theAD131-TC Thermoelectric Controller Module
AD427-C

Detector Head Type - PbS, TE Cooled

AD429-C

Detector Head Type - PbSe, TE Cooled

AD430-C

Detector Head Type - InGaAs, TE Cooled

AD431-C

Detector Head Type - Si/InGaAs, TECooledwww.spectralproducts.com

62

Spectral Products

SP800
800Hz Optical Chopper•Provides 800Hz chopped optical signal for use with PbS and PbSe Infrared Detectors.
•Mounts directly to all Spectral Products monochromators, detectors, light sources, filter wheels and filter carriers.
•High Reliability•Light Spectrum Purity•Low Profile•Small Footprint when integrated with light source or detector•Low Power•High Shock Resistance•High Temperature Resistance

Detection Systems

The Spectral Products' 800 Hz optical chopper provides many unique advantages over a motorized chopper wheel or reciprocating
blade. In an industrial product, the compact size, frequency stability and reliability permit many tough applications to become
possible. The aperture motion or chopper window is produced by a high-Q resonating tuning fork that is highly resistant to vibrationand shock. There is basically no moving part to jam or to wear down.
SP' choppers will quickly reach stability after "power-on" in less than 2 seconds. Power consumption is typically around 20mW. Dueto the compact size and special alloys, Spectral Products choppers can be mounted in close proximity to many hot filament sources.

Section V : AS Series Light Sources

Broadband Light Source
ASB-W-005

Tungsten-Halogen (TH)/ ASB-W-020

ASB-W-030 Tungsten-Halogen (TH)/ ASBN-W

ASBN-D130/230 Deuterium(D2)/ ASB-XE 175

Tungsten-Halogen (TH)Tungsten-Halogen (TH)Xenon (Xe)ASB-IR-12K/18K IR Emitter (CFIR)
Hybrid Light Source
ASBN-DW-MINI

Miniature Deuterium & Tungsten-Halogen

ASB-D1-W Single Deuterium & Tungsten-Halogen / ASB-D2-W

Dual Deuterium & Tungsten-Halogen

Calibration Light Source
ASC-DC Portable Wavelength Calibration Source/ ASC Series

Spectral Calibration Lamps & Assemblies

Uniform & Diffused Light Source
AT-IS-1.5

Integrating Sphere with Tungsten-Halogen

Wavelength Tunable Light Source
AST-W

Tungsten-Halogen Based

/

AST-D

AST-XE

175W Xenon Based/

ASTN-D1/D2Deuterium Based
Deuterium & Tungsten-Halogen Hybrid Based64

Spectral Products

ASB-W-005
High Stability Visible Lamp Assembly•Provides optimal illumination to fiber optics for remote applications•Offers excellent color temperature stability•Use with SP's SM Series spectrometers•Contains internal current regulation

Light Sources

Optimum Illumination for SP's SM Series Spectrometers
This lamp is a near Black Body source of light in the visible to near IR spectral region. It has been designed to produce themaximum illumination from a Black Body source into a fiber bundle.
The lamp assembly comes in a 5 watt (ASB-W-005) tungsten/halogen lamp configuration, an aluminum housing, and a walltransformer as a power supply. The power input is regulated inside the lamp housing to assure a ±0.4% stability over the current
range. Current regulation ensures color temperature stability.
The tungsten/halogen lamp used inside the lamp has a nominal color temperature of 2800°
K and an average life of 10,000 hours
at this color temperature.

Spectral Products

65Light Sources

Spectral Distrbution of Light Emmitted by Blackbody at 2800°K.

Specifications :Lamp : Tungsten-halogen
Power : Wall transformer, 115 VAC, 50/60 Hz to 12 VDC at 0.8
amps 220 VAC version available
Current Regulation : ±0.4%
Mean Spherical Candlepower : 3.3
Color Temperature : 2800°
K
Bulb Life : 10,000 hrs. average
Housing : Aluminum, convection cooled, 1/4”-20T in base for post
mounting.
Connector : SMA Fiber connector Type 905
Size : Longth 3.8 inches (9.8cm)
Highth 2.3 inches (5.9cm)
Wideth 2.1 inches (5.7cm)
Weight : 11 ozs. (0.3 kgs.)
Options : Specify SM, FC, ST, CL, or CS for specific fiber
couplers.

Ordering Information: Please indicate product number plus
description when ordering.
ASB-W-005

5 watt Tungsten-halogen Visible Light Assembly

ASB-W-005B Spare Bulb, 5 wattwww.spectralproducts.com

66

Spectral Products

ASB-W-020
High Stability Tungsten-Halogen Fiber Light Source•Offers excellent color temperature stability•Provides illumination for applications through optical fiber•Focus adjustable light source SMA and fiber bundle adaptor•Features built in current regulation

Light Sources

Optimum Illumination for Your Fiber Optic Needs
The ASB-W-020 is a complete light source assembly with a tungsten-halogen lamp that emits in the 300 to 2500 nanometer (nm)wavelength region. It has been designed to transfer the maximum possible illumination to a variety of fibers. The tungsten-halogen
lamp of the ASB-W-020 is a near blackbody source of light with a built-in fused silica lens that focuses the light to the fiber. Figure 1
shows blackbody spectral distributions at various color temperatures in Kelvin (K). The ASB-W-020 spectral distributions resemble
those of Figure 1 out to about 2500nm, beyond which the transmission of the fused silica lens limits the output.
In addition to the 20 Watt tungsten-halogen lamp (SP # ASB-W-020B), the ASB-W-020 features a lamp housing and a current
regulator to assure a stable output. The housing contains an adjustable lamp mount. A variety of flanges allow the mounting of different
fiber terminations, from a single fiber to bundles.
The 20 Watt tungsten-halogen lamp used in the ASB-W-020 has a nominal color temperature of 3100 K and the regulated power
input assures an average life of 2000 hours.
The power supply provided with the ASB-W-020 is a wall plug-in type.

Spectral Products

67Light Sources

Figure 1. Spectral distribution of light emitted by blackbodies at various color
temperatures indicated in Kelvin (K)Specifications :Lamp : Tungsten-Halogen
Power : Wall transformer, 120 VAC, 50/60 Hz to 24 VDC at 2.0 amps.
220 VAC version available
Current : Built-in, ±0.4%
Color Temperature : 3100°K
Bulb Life : 2,000 hrs. average (nominal)
Spectral distribution: near blackbody
Housing : Aluminum, forced air cooled, Limited focus adjustment
Connector: SMA Fiber connector Type 905
Dimension: Length 3.8 inches (9.8cm) Height 2.3 inches (5.9cm) Width 2.1 inches (5.7cm)
Weight : 11 ozs. (0.3 kgs.)
Options : Spare lamp ASB-W-020B
Mounting flange for 10mm fiber bundle
Optical bench mounts
Specify FC, ST or CS for specific fiber couplers.
Warranty : One year

Ordering Information: Please indicate product number plus
description when ordering.
ASB-W-020

Visible Source Assembly

ASB-W-020B

Spare Lamp, 20 Watt Tungsten-Halogen

www.spectralproducts.com

68

Spectral Products

ASB-W-030
High Stability Tungsten-Halogen Light Source• Provides optimal illumination to monochromators• Offers excellent color temperature stability• Features adjustable constant current power supply• Contains focusable fused silica lens assembly• Uses AF Series for remote fiber optic illumination

Light Sources

Figure 2. Lamp cross section

Optimum Illumination for Your Monochromator
The ASB-W-030 is a complete light source assembly with a tungsten-halogen lamp that emits in the 300 to 2600 nanometer (nm)wavelength region. It has been designed to transfer the maximum possible illumination from a tungsten-halogen lamp to Digikrom
monochromators. The tungsten-halogen lamps of the ASB-W-030 are near blackbody sources of light with fused silica envelopesaround the lamp filaments. Figure 1 shows blackbody spectral distributions at various color temperatures in Kelvin (K). The ASB-W-030
spectral distributions resemble those of Figure 1 out to about 2600nm, beyond which the transmission of the fused silica lamp envelope
limits the output.
In addition to the 30 Watt tungsten-halogen lamp (SP type ASB-W-030B), the ASB-W-030 features a housing for the lamp and an
adjustable constant current power supply. The housing contains a focusable fused silica lens assembly selected for optimum coupling
to the monochromator. The focus adjustment also allows for flexible mounting configurations for the ASB-W-030, with output focusing
adjustable over a wide range of focal lengths. This also makes the ASB-W-030 an excellent light source for illumination of samples.
The 30 Watt tungsten-halogen lamp used in the ASB-W-030 has a nominal color temperature of 3100 K and an average life of 400
hours at this temperature. The color temperature of the lamp is directly proportional to the lamp current which may be varied ±25%with a control knob on the power supply. Over this range, both illumination and average life will change by approximately ±50%.
The optics of the ASB-W-030, in combination with the 30 Watt lamp, provide maximum illumination for monochromators. Higher
power lamps have larger filaments, but no greater brightness per unit area. A filament larger than the 30 Watt size would simply overfill
the entrance slit.
The power supply provided with the ASB-W-030 is a DC current regulated power supply. Current regulation optimizes color
temperature stability.

Spectral Products

69

Specifications :Lamp : Tungsten-Halogen
Filament size : 1mm x 4mm
Power : 30 Watts (nominal)
Light Output : 800 lumens (nominal)
Current : 2.75 amp (nominal)
Color Temperature : 3100°
K
Average Life : 400 hours (nominal)
Spectral distribution : near blackbody
Mount : Tapered flange, adjustable, Post mounting forstandalone operation

Power Output :Type : constant current DC
Range : 2.0 amp to 3.5 amp
Regulation : 0.05%
Warrant : One year
Options : Spare lamp ASB-W-030B
AF Series for remote fiber optic illumination.
An infrasil lens assembly is available by request for better
lamp emission at wavelengths beyond 2600nm. Contact
the SP sales team if you have special requirements.

Housing : Air cooled with focusable fused silica doublet
collection lens, f/1.9 collection and f/3.9 output.

Ordering Information: Please indicate product number(lamp cross section)plus description when ordering.

Power Input : 115 VAC, 50/60 Hz, 1 amp (standard)
220 VAC, 50/60 Hz, 0.5 amp (optional)

ASB-W-030

Visible Source Assembl

ASB-W-030B Spare Lamp, 30 Watt Tungsten-Halogen

www.spectralproducts.com

Light Sources

Figure 1. Spectral distribution of light emitted by blackbodies at various color
temperatures indicated in Kelvin (K)70Spectral Products

ASBN-W
High power Tungsten-Halogen Light Source Series• Provides optimal illumination to monochromators• Offers excellent color temperature stability• Features adjustable constant current power supply• Contains focusable fused silica lens and UV protected Al coated mirror assemblyLight Sources

Optimum Illumination for Your Monochromator
The ASBN-W high power tungsten-halogen series are complete light source assemblies with 50W/75W/100W/150W tungstenhalogen lamps that emit in the 300 to 2600 nanometer (nm) wavelength region. They have been designed to transfer the maximum
possible illumination from a tungsten-halogen lamp to Digikrom monochromators. The tungsten-halogen lamps of the ASBN-W highpower series are near blackbody sources of light with fused silica envelopes around the lamp filaments.
The housing contains a 1" UV grade fused silica lens (f#/1.2) and UV protected Al coated mirror (f12.5mm) assembly selected for

optimum coupling to the monochromator or the fiber, a regulated power supply and a cooling fan. The power supply provided with the
ASB-W-030 is a DC current regulated power supply. Current regulation optimizes color temperature stability.

Spectral Products

71

Specifications :Lamp :
Power input

Light output

Color Temp.

Life Time

Filament size

50W

900 lumens

3,000°
K

2,000 hours

4.2mm X 2.5mm

75W

1,400 lumens

3,000°
K

2,000 hours

5.0mm X 1.6mm

100W H

3,000 lumens

3,400°
K

50 hours

5.3mm X 3.0mm

100W L2,000 lumens

3,000°
K

2,000 hours

5.2mm X 2.3mm

150W H6,000 lumens

3,400°
K

50 hours

6.2mm X 3.1mm

150W L5,000 lumens

3,200°
K

300 hours

5.8mm X 3.0mm

Housing :Air cooling fan with a regulated power supply,
1" UV grade focusable fused silica collection lens (f#/1.2)
1" UV protected Al coated mirror (f 12.5mm)
Dimension : 8" X 10" X 5"

Light Sources

Power Input:
Input Voltage : 85-264 VAC (110V/220V compatible)
Input Frequency : 47-63Hz
Inrush Current : 30A/100V, 40A/200V
Over-voltage Protection : Clamp, 115-135%
Current Limit : 105-150% typ, Self-reset Fold backSafety : UL / TUV / CE
Oper. Temp.: 0 to 50 °C
Power Output :Type : constant current DC
VDC : 12V (24V for 150W)
Max. Current : 12.5A (8.4A for 150W)
Ripple/Noise (20MHz BW) : 100mV Pk-Pk, typ.
Regulation : 0.5%, typ.
Warranty : One year
Options :Spare lamp : ASBN-WB-050/075/100-H/100-L/150
Input power controller : ASBN-W-PV (including voltage indicator)
Needed to be specify the fiber coupling or collimated output
Focusing lens set for monochromator : ASBN-W-FL (1" UV fused silica lens)Ordering Information: Please indicate product number plus description whenordering.
ASBN-W050(F/C)

50W High Power Tungsten-halogen

ASBN-W075(F/C)

75W High Power Tungsten-halogen

ASBN-W100(F/C) - (H/L)

100W High Power Tungsten-halogen

ASBN-W150(F/C) - (H/L)

150W High Power Tungsten-halogen

F : Fiber Coupling

C : CollimatedH : High Color Temp. L : Low Color Temp.

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72

Spectral Products

ASBN-D130 / ASBN-D230
deep UV Deuterium Light Source Assembly•Provides maximum possible illumination•Contains 1" quartz doublet assembly for optimum coupling•Assures maximum stability and lifetime of lamp

Light Sources

Optimum UV Illumination for Fiber Optics
The ASBN-D130/230 is a deep UV ultraviolet deuterium light source for the 180-400nm (max. 160-400nm) region. It has been
designed to provide the maximum possible illumination either directly or through an optical fiber.
The ASBN-D130 consists of one 30 watt deep UV deuterium lamp, a housing and a regulated power supply. The housing contains a
1" quartz doublet (f#/1.0, 1X) assembly for maximum possible illumination to the optical fiber.
The ASBN-D230 consists of two 30 watt deep UV deuterium lamps, a housing and two regulated power supplies. The housing
contains two 1" quartz doublet (f#/1.0, 1X) assemblies. One is for focusing the second deuterium lamp on the first lamp and the other isfor maximum possible illumination to the optical fiber. The first deuterium lamp has a "see-through" hole to allow the light from asecondary source to pass through the same light path as the first one.
The 30 watt deuterium lamp used in the ASBN-D130/230 has an average lifetime of 1,000 hours under regulated conditions. The life
end is defined as the time when the UV region radiant intensity falls below 50% of its initial value or when output fluctuation exceeds
0.03%.
The power supply provided with the ASBN-D130/230 is a dc current regulated one. This assures maximum stability and lifetime of
the lamp.

Spectral Products

73

Specifications :Lamp :
Type : Deuterium with fused silica jacket, mounted and pre-aligned.
Power input : 30 Watt (nominal) per each lamp
Lamp current : 300 ° 30 mA DC
Average Life : 1000 hours (nominal)
Housing :1" quartz doublet (f#/1, 1X) collection lens.
Convection cooled.
Dimension : 6" X 5" X 10"
Power Supply :Power input :115 vac, 50/60 Hz, 3 amps. 230 vac, 50/60 Hz, 1 amp, optional
Power output : Constant current dc, 60-120vdc selectable, 300 mA DC
Regulation : + 10 mA
Stability : 100 ppm/°C
Operating Temperature : 5-35°C
Light Sources

Warranty : One year
Options :Spare lamp (mounted and pre-aligned),
Specify SM, FC, ST, CL, or CS for specific fiber couplers.

Ordering Information: Please indicate product number plus
description when ordering.
ASBN-D130-(F/M) Single deep UV Deuterium
ASBN-D230-(F/M) Double deep UV Deuterium
F : Fiber Coupling
M : Monochromator f/# matchingwww.spectralproducts.com

74

Spectral Products

ASB-XE-175
Xenon Fiber Optic Light Source• Provides optimum illumination to fiber optics for remote applications•High intensity (5600°
K) Xenon outputⓇ•Contains CERMAX high intensity xenon lamp

FEATURES :• High Color Temperature (5600°
K)Ⓡ•CERMAX Collimated•Xenon Lamp
•Brightness Control (0 - 100%)•Portable and Light Weight

APPLICATIONS:•Spectroscopy•Microscopy
Light Sources•Visual Inspection•Boroscopes•Machine Vision•Optical Scanning•Data and Video Projection

Optimum Remote or Direct Illumination
The ASB-XE-175 is a compact and light weight high intensity fiber optic light source. It is especially suitable as a light source forspectroscopy, microscopy, optical scanning, medical and industrial uses, as well as for use with SP's popular Digikrom
monochromators and spectrographs.
The ASB-XE-175 uses a CERMAXⓇ

compact high intensity xenon lamp, state of the art optics and a high efficiency lightweightswitching power supply in one compact package.
The 175W short-arc xenon lamp provides broadband output from 200 to 2200nm (dominantly, from 250 to 1100nm). This lamp is
compact, rugged, and easily focused to a liquid light guide (sold separately). The lamp efficiency is enhanced by the integral parabolicreflector which provides precision system alignment and maximum transition of light energy. Beam stability is achieved instantly
following lamp ignition and the ASB-XE-175 provides instant re-ignition without an imposed time delay.

Spectral Products

75

Specifications :Ordering Information: Please indicate product number plus
description when ordering.
ASB-XE-175EX

Extended Xenon Source (200-2200nm)

ASB-XE-175-BF

Ozone Blocking Xenon Source (320-700nm)

ASB-XE-175-BFEX

NIR extended, Ozen Blocking Xenon Sourie(320-2200nm)

ASB-XE-175BUV

Replacement Extended bulb

ASB-XE-175BF

Replacement Ozone Blocking bulb

AF5000-50001111-S10S Liquid Light Guide(270-720nm) S Type
AF5000-50001111-V10S Liquid Light Guide(340-750nm) V Type
Please see the AF series section in this catalog for more details
about Liquid Light Guides and other Fiber Assemblies.

www.spectralproducts.com

Light Sources

Lamp :
Type : CERMAX LX175FPower : 200 Watts (maximum)
Power Range : 150-200 W
Color Temperature : 5600°K
Current : 14 amps DC (nominal)
Average Life : Typically 1000 hours (500 hours minimum)
Voltage : 12-17V (14V nominal)
Trigger Voltage : 25 Kilovolts
Boost Voltage : 140-200 Volts
Current Leakage : < 300mA
ASB-XE-175-EX : UV extended, 200nm ~ 2200nm (dominant, 250nm ~ 1100nm)
ASB-XE-175-BF : Ozone blocking, 320nm ~ 700nm
ASB-XE-175-BFEX : NIR extended, Ozone blocking, 320nm ~ 2200nm (dominant,
320nm~1100nm)
Weight : 7.5 lbs. (3.4 kg)
Input Line : 95-136 VAC, 50/60 Hz (only)
Input Current : 3.5 amp.
Environment :Operating : +6 to +45°C
Storage : -40 to +70°C
Front Panel : Brightness Control (0-100%)
Output Aperture
Side Panel :Main Power (On/Off)Line Cord Jack (IEC 320)
(US to IEC Line Cord included)
Fuse Holder - MDL-5
Caution : Damage to glass or fused silica fiber optic lightguides can occur due tohigh temperatures associated with Xenon lamps. Use our liquid light guides (orderseparately).

76

Spectral Products

ASB-IR-12R/18K IR Emitter• Supported, Coil-Wound• Rugged and Reliable• ASB-IR-12K operates at 975°C when powered with 11 watts• ASB-IR-18K operates at 1200°C when powered with 20 watts

Light Sources

Optimum Illupnination for IR range Spectroscopy
The coiled filament operates at approximately 975°ΔC when powered with 11 watts for the ASB-IR-12K and 1200°ΔC when poweredwith 20 watts for the ASB-IR-18K. The radiating element of the ASB-IR-12K is a coil of resistance wire which has a high emissivity in
the Infrared spectral region. The coil is supported on a grooved cylindrical substrate of alumina, resulting in the windings being
electrically insulated from each other. This contributes to a more uniform radiating source. The unit does not require operation in asealed atmosphere. The header is fabricated from cold-rolled steel. The support pins are hermetically sealed in glass.
The ASB-IR-18K is designed for those customers who require higher temperatures and greater output from their infrared source.
These emitters are manufactured using a patented silicon nitride material. The advanced ceramic technology ensures a very stableproduct. Their robust design ensures intrinsic physical and thermal strength. When operated at 12 volts / 20 watts the ASB-IR-18K
reaches 1200°C. These silicon nitride emitters are mounted in a 1 inch parabolic reflector for extremely efficient collimation ofenergy. This unit is our highest output IR product.

FeatureValue
ABS-IR-12K

Part Number

ABS-IR-18K

6.0 V (AC or DC)

12.0V (AC or DC)

Temperature

975°C

1200°C

Current

1.8A

1.7A

Power

11.0W

20.0W

Emissivity

0.80

0.75

Active area

3.5mm X 3.5mm

1.52mm dia., 4.06mm length

Voltage

Ordering Information : Please indicate product number plus description when ordering.
ASB-IR-12K 11W Coiled filament IR emitter
ASB-IR-18K 20W Coiled filament IR emitter

Spectral Products

77

Miniature hybrid light source• Small size
• Low power consumption (6W)
• Low heat generation• Easy coupling to optical fibers, measuring cells and capillaries• Long life time
• Robust mode of operation

Light Sources

Optimum Illumination for SP's SM Series Spectrometers
The ASBN-DW-MINI is a miniature UV-VIS light source a continuous spectrum covering the whole range from deep UV to near
Infrared ( spectrum curve ). This light source was developed in response to customer requests for a small UV-Light source withnegligible heat generation. The features of this light source open the way for new solutions in small spectroscopy equipment and UV
optics. Features are small size low power consumption (6 W) low heat generation easy coupling to optical fibers, measuring cells
and capillaries lifetime up to 3 years robust mode of operation.
The ASBN-DW-MINI incorporates a miniature Deuterium Lamp ? an electrode-less high frequency excited gas discharge lamp.
The Deuterium Lamp features small size, 3Watt power consumption, and negligible heat generation. It is a complete UV-VIS lightsource with a shine-through design deuterium lamp, a 0.25 Watt tungsten lamp, shutter, optical system and SMA 905 connector or
collimating output les set. All elements are mounted on a printed circuit board driven by an external 12 Vdc/600 mA power supply.
Both lamps and the shutter can be controlled by a TTL signal.

Specifications :Lamp : 3W Deuterium, 185-400nm
0.25W Tungsten-Halogen, 400-1100nm
Power : Approx. 6W.
12Vdc/0.6Adc

Bulb Lifetime : Deuterium: >1,000 hours (50% intensity loss)
Tungsten : >2,000 hours
Connector : SMA 905 Fiber connector or collimated output

Relative Humidity : Max. 90%, non-condensing

Ordering Information: Please indicate product number plus

Ambient Temperature : 5 - 35°
C

description when ordering.

Shutter : Lamp off/dark current measurement, TTL controlled
Functions : Deuterium and tungsten-halogen lamp can betriggered separately by a TTL signal

ASB-DW-MINI

Miniature Deuterium & Tungsten - Halogen
Light Source

www.spectralproducts.com

78

Spectral Products

Single Deuterium and Tungsten-halogen HybridLight Source
ASBN-D1-W series, single deuterium and Tungsten-halogen hybrid
light source consists of one 30W deep UV deuterium lampand a highpower tungsten-halogen lamp. The specially designed "see-through"deuterium lamp can allow the light from a secondary source to passthrough the same light path as the deuterium lamp. SP uses a proper
focusing/collimating doublet lens set to obtain maximum opticalpower of the secondary light source(Tungsten-halogen) throughthe small "see-thgough" hole.

Light Sources

ASBN-D1-W050F

30W deep UV Deuterium lamp and 50W Tungsten-Halogen (3000°
K /2000hours / 900 lumens) light source,
180nm ~ 2.6μm.

ASBN-D1-W050M

w/ 1" UV fused silica doublet & UV protected mirror for focusing TH.
w/ 1" UV fused silica doublet for optimal fiber coupling/monochromator f# matchingw/ regulated power supplies.
F: fiber coupling,
M: monochromator f# matching.

ASBN-D1-W075F

30W deep UV Deuterium lamp and 75W Tungsten-Halogen (3000°
K / 2000hours / 1400 lumens) light source,
180nm ~ 2.6μm.

ASBN-D1-W075M

w/ 1" UV fused silica doublet & UV protected mirror for focusing TH.
w/ 1" UV fused silica doublet for optimal fiber coupling/monochromator f# matchingw/ regulated power supplies.
F: fiber coupling,
M: monochromator f# matching.

ASBN-D1-W100F-H
ASBN-D1-W100DF-L

30W deep UV Deuterium lamp and 100W Tungsten-Halogen light source, 180nm ~ 2.6μm.
w/ 1" UV fused silica doublet & UV protected mirror for focusing TH.

ASBN-D1-W100M-H
ASBN-D1-W100M-L

w/ 1" UV fused silica doublet for optimal fiber coupling/monochromator f# matchingw/ regulated power supplies.
H: High color temperature (3400°
K / 50 hours / 3000 lumens)
L: Low color temperature (3000°
K / 2000 hours / 2000 lumens)
F: fiber coupling,
M: monochromator f# matching.

ASBN-D1-W150F-M
ASBN-D1-W150F-L

30W deep UV Deuterium lamp and 150W Tungsten-Halogen lightsource, 180nm ~ 2.6μm.

ASBN-D1-W150M-H
ASBN-D1-W150M-L

w/ 1" UV fused silica doublet & UV protected mirror for focusing TH.
w/ 1" UV fused silica doublet for optimal fiber coupling/monochromator f# matchingw/ regulated power supplies.
H: High color temperature (3400°
K / 50 hours / 6000 lumens)
L: Low color temperature (3400°
K / 300 hours / 5000 lumens)
F: fiber coupling,
M: monochromator f# matching.

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79

Dual Deuterium and Tungsten-halogen HybridLight Source
ASBN-D2-W series, dual deuteriums and Tungsten-halogen hybrid light source
consists of two 30W deep UV deuterium lamps and a high power tungstenhalogen lamp. The specially designed "see-through" deuterium lamp canallow the light from secondary sources to pass through the same light pathas the deuterium lamp. SP uses proper focusing/collimating doublet lenssets to obtain maximum optical power of the secondary light sources
through the small "see-thgough" holes.
Generally, the optical power of deuterium is lower than that of tungstenhalogen. In some special applications that need high power UV light, theselight sources will be useful.

ASBN-D2-W050F

ASBN-D2-W075F
ASBN-D2-W075M

Two 30W deep UV Deuterium lamps and 75W Tungsten-Halogen (3000°
K / 2000 hours / 1400 lumens) lightsource, 180nm ~ 2.6μm.
w/ 1" UV fused silica doublet & UV protected mirror for focusing TH.
w/ 1" UV fused silica doublet for focusing the 2nd deuterium lamp.
w/ 1" UV fused silica doublet for optimal fiber coupling/monochromator f# matchingw/ regulated power supplies.
F: fiber coupling,
M: monochromator f# matching.

ASBN-D2-W100F-H
ASBN-D2-W100F-L
ASBN-D2-W100M-H
ASBN-D2-W100M-L

Two 30W deep UV Deuterium lamps and 100W Tungsten-Halogen lightsource, 180nm ~ 2.6μm.
w/ 1" UV fused silica doublet & UV protected mirror for focusing TH.
w/ 1" UV fused silica doublet for focusing the 2nd deuterium lamp.
w/ 1" UV fused silica doublet for optimal fiber coupling/monochromator f# matchingw/ regulated power supplies.
H: High color temperature (3400°
K / 50 hours / 3000 lumens)
L: Low color temperature (3000°
K / 2000 hours / 2000 lumens)
F: fiber coupling,
M: monochromator f# matching.

ASBN-D2-W150F-H
ASBN-D2-W150F-L
ASBN-D2-W150M-H
ASBN-D2-W150M-L

Two 30W deep UV Deuterium lamps and 150W Tungsten-Halogen lightsource, 180nm ~ 2.6μm.
w/ 1" UV fused silica doublet & UV protected mirror for focusing TH.
w/ 1" UV fused silica doublet for focusing the 2nd deuterium lamp.
w/ 1" UV fused silica doublet for optimal fiber coupling/monochromator f# matchingw/ regulated power supplies.
H: High color temperature (3400°
K / 50 hours / 6000 lumens)
L: Low color temperature (3400°
K / 300 hours / 5000 lumens)
F: fiber coupling,
M: monochromator f# matching.

www.spectralproducts.com

Light Sources

ASBN-D2-W050M

Two 30W deep UV Deuterium lamps and 50W Tungsten-Halogen (3000°
K / 2000 hours / 900 lumens) lightsource, 180nm ~ 2.6μm.
w/ 1" UV fused silica doublet & UV protected mirror for focusing TH.
w/ 1" UV fused silica doublet for focusing the 2nd deuterium lamp.
w/ 1" UV fused silica doublet for optimal fiber coupling/monochromator f# matchingw/ regulated power supplies.
F: fiber coupling,
M: monochromator f# matching.

80Spectral Products

ASC-DC
Portable Wavelength Calibration Source• Argon enhanced Mercury portable calibration lamp
• Highly repeatable wavelength, linewidth, and intensity calibration standard• Easily mounts to SP monochromaters and spectrographs• Couples to SP AF Series coupler for fiber optic output• Convenient Battery with AC adapter for use in the field

Light Sources

Optimal Solution for Calibrating SP's SM Spectrometers
The atomic emission of the ASC Series lamps consists of discrete spectral lines of defined wavelength, spectral width, and relative
intensity. Their stability makes them extremely useful for calibration, alignment, and resolution testing of spectrophotometric
instrumentation, including monochromators, spectrographs, spectrophotometers, and detectors. Portable battery operation for fielduse. The installed rechargeable battery can be easily recharged by the built-in recharging system.
The argon enhanced mercury lamp installed emits strong lines throughout UV to NIR (~180-1000nm), which makes it the best solution
for resolution testing or calibrating on a UV/VIS/NIR spectrometer or a monochromator.

Spectral Products

Ar Spectral Calibration Data

Wavelength (nm)Wavelength (nm)Light Sources

Hg Spectral Calibration Data

81

Specifications :Lamp : Atomic emmission lamps with double bore fused silica tubing
Housing : Black anodized Aluminum
Dimensions : 4.125" x 1.25" x 0.875" (HxWxD)
AC Power : Wall transformer, 120 VAC, 50/60 Hz to 9 VDC
Battery : 9 V (rechargeable)
Battery Life : 25-45 minutes On-time
Options : AF Series fiber optic couplers

Ordering Information: Please indicate product number plus
description when ordering.
ASC-HGAR-DC Argon enhanced Mercury Spectral
Calibration Lamp

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82

Spectral Products

ASC Series
Spectral Calibration Lamps and Assemblies•Accommodates compact pencil-style calibration lamps. Offering various lamp selections.
•Provides highly repeatable wavelength, linewidth, and intensity calibration standards.
•Allows quick-on/quick-off instrument mounting. Features post mount for optical bench.
•Five elemental emitters - Hg, Ne, Xe, Ar, and Kr.

Light Sources

A Complete Spectral-Line Source
The ASC Series spectral calibration lamp and lamp assembly constitute a complete spectral-line source. The AS260 lamp assembly
consists of a power supply and lamp housing for the AS Series calibration line-source lamps.
As a reference standard, the atomic emission of the AS Series lamps consists of discrete spectral lines of defined wavelength,
spectral width and relative intensity. The stability makes them extremely useful for calibration, alignment, and resolution testing ofspectrophotometric instrumentation, including monochromators, spectrographs, spectrophotometers and detectors.
Five different calibration lamps are available: Mercury (Hg); Neon (Ne); Argon (Ar); Krypton (Kr); and Xenon (Xe). The Mercury lamp
has strong spectral lines throughout the UV-VIS region.
The Neon lamp has a large number of lines of mid to high intensity in the 800nm to 3400nm range, which makes it useful for
resolution testing in the NIR region . There are also a number of closely spaced lines of similiar intensity over this wavelength range.
The Xenon lamp’s distribution of lines of moderate intensity between 800nm and 3500nm is useful for calibration in the IR. Theseemission lines are relatively close to wavelengths used by fiber optic communication systems for data transfer. Testing of fibers anddetectors for these systems can be performed without the inherent high cost of lasers for light sources.
The Argon line spectrum features a number of lines of consistent high intensity between 700nm and 1000nm. These lines at such ahigh intensity are excellent for calibration in that region. There are also several lines spaced less than 1 nm apart that can be used for
resolution testing.

Spectral Products

83

AS Series Lamps

Note : These lamps produce intense ultra-violet radiation and require that appropriate
Dimensions in inches

precautions be taken when used. Avoid prolonged exposure of eyes or skin to the lamps’rays.

AS Series Power Supply
Light SourcesHigh - 2.20

Note: Output cord has a polarized cap,
the large pin receptacle is ground. DO
NOT use power supply from unground
AS Series Lamp Holder

mains. The transformer used in theAS260 Power Supply is manufactured to
NEMA standards for Class A transformer
operation.

Specifications :Package : Sealed double bore fused silica tubing.
Warmup : 2-4 minutes
Lamp Lifetime : 5000 hours (500 hours for Neon)Power Supply : 110 to 230 VAC, 50/60 Hz
Line Cord : 6 ft. (1.83m), 3-wire ground type SJ
Output Connection : 16”(40.6 cm) cord withpolarized female connectors
Output Voltage : 1600V rms, +10%, -0%
Output Current : 0.018 Amp, +10%, -0%
Max Ambient Temperture : 35°
C
Min Ambient Temperature : 15°
C
Options : AF2 Series Fiber Optic Couplers.

Ordering Information : Please indicate product number plus
description when ordering.
ASC-AC Spectral Calibration Lamp Assembly
Includes power supply and lamp housing
ASC-HG Mercury (Hg) Spectral Calibration Lamp
ASC-NE Neon (Ne) Spectral Calibration Lamp
ASC-XE Xenon (Xe) Spectral Calibration Lamp
ASC-AR Argon (Ar) Spectral Calibration Lamp
ASC-KR Krypton (Kr) Spectral Calibration Lamp

www.spectralproducts.com

84

Spectral Products

ASC Series
Calibration Lamp Spectral Data

Light Sources

Spectral Products

85

ASC Series
Calibration Lamp Spectral Data

Light Sources

www.spectralproducts.com

86

Spectral Products

AT-IS-1.5
Integrating Sphere w/Built-in Tungsten Light Source
1.5" Integrating Sphere combined with an 5W regulated Tungsten Halogen Light Source
Detector Port with SMA interface
1/2" Full Size Port
Designed for color applications, this compact 1.5" integration sphere and light source can also be used as a low cost diffuse(uniform) light source. Standard unit includes SMA detector port connection and detector collection optic. 1/2" Full Size Port can beplace aganist surface to be analyzed; small objects can also be inserted for analysis.
Detector port can also be directly interfaced to Spectral Products SM200 and SM241 spectrometers

Light Sources

Ordering Information: Please indicate product number plus description when ordering.
AT-IS-1.5

1.5”Uniform Light Source

Spectral Products

87

Wavelength Tunable Light Sources•Computer controlled via standard RS232 interface.
•Scans in both directions and in nanometers, Angstroms, microns, wave-numbers, or eV.
•May be configured for optimal fiber optic illumination.
•4 models for UV, VIS, and IR. Modular design allows for reconfiguring.
•Couples to SP Spectral Products equipment.

1.Tungsten-Halogen Based•Variable narrowband light output selection from Near UV(300nm) to Near IR (2.6μm)•Computer controlled via standard RS232 interface•Scans in both directions and in nanometers, Angstroms,
microns, wave-numbers, or eV•May be configured for optimal fiber optic illumination•Modular design allows for reconfiguring•Couples to Spectral Products equipment

Spectral Products has a tunable light source to meet your needs. Each model is based on our popular CM110 dual grating, 1/8meter monochromator, paired with one of Spectral Products' high power tungsten-halogen light sources.

ModelsAST-W-030 : 30W tungsten-halogen model.
ASTN-W-050 : 50W tungsten-halogen model.
ASTN-W-075 : 75W tungsten-halogen model.
ASTN-W-100-L : 100W low color temperature tungsten-halogen model.
ASTN-W-100-H : 100W high color temperature tungsten-halogen model.
ASTN-W-150 : 150W tungsten-halogen model.

Model : CM110

Monochromatorf/# : 3.9
Grating : Two gratings can be installed (ref, CM Gratings )Interface : RS232 standard
Model : ASB-W-030/ASBN-W050/075/100-L/100-H/150
Power : 30/50/75/100/150 Watts

Light Source

Bulb Light Power : 800 ~ 4,700 lumens
Bulb Life : 50 ~ 2,000 hours.
Bulb Color Temp. : 3,000°
K ~ 3,400°
K

Accessories &Options

Order sorting filter holder : AB202 included.
Order sorting filter : AB3XXX series (sold separately).
Fiber coupling output : AFCM-L-XX, XX: SM-SMA, FC-FC, CS-Ferrule. Sold separately.

www.spectralproducts.com

Light Sources

Simple, Flexible

88

Spectral Products

2.Deuterium Based•Variable narrowband light output selection in UV range (180nm - 400m)•Computer controlled via standard RS232 interface•Scans in both directions and in nanometers, Angstroms, microns, wave-numbers, or eV•May be configured for optimal fiber optic illumination•Modular design allows for reconfiguring•Couples to Spectral Products equipment

Light Sources

Simple, Flexible
Spectral Products has a tunable light source to meet your needs. Each model is based on our popular CM110 dual grating, 1/8meter monochromator, paired with one of Spectral Products' deep UV 30W deuterium light sources.

ModelsAST-D-030 : 30W deep UV deuterium model (conventional).
ASTN-D130 : One 30W deep UV deuterium model.
ASTN-D230 : Two 30W deep UV deuterium model.

Model : CM110

Monochromatorf/# : 3.9
Grating : Two gratings can be installed (ref, CM Gratings )Interface : RS232 standard

Model : ASBN-D130/230

Light Source

Power input : 30 Watts (nominal)
Lamp current : 300 ±30 mA DC
Average Life : 1000 hours (nominal)

Accessories &Options

Order sorting filter holder : AB202 included.
Order sorting filter : AB3XXX series (sold separately).
Fiber coupling output : AFCM-L-XX, XX: SM-SMA, FC-FC, CS-Ferrule. Sold separately.

Spectral Products

89

3.175W Xenon Based•Variable narrowband light output selection from UV (200nm) to Near IR (2.2μm)•Computer controlled via standard RS232 interface•Scans in both directions and in nanometers, Angstroms, microns, wave-numbers, or eV•May be configured for optimal fiber optic illumination•Modular design allows for reconfiguring•Attenuation control•Couples to Spectral Products equipment

Spectral Products has a tunable light source to meet your needs. Each model is based on our popular CM110 dual grating, 1/8meter monochromator, paired with one of Spectral Products' 175W Xenon light sources.

ModelsAST-XE-175EX : 175W UV/NIR Extended Xenon based model, 200nm ~ 2,200nm range.
AST-XE-175BFEX : 175W NIR Extended Xenon based model, 320nm ~ 2,200nm range. Ozone free.
AST-XE-175BF : 175W Ozone blocking Xenon based model, 320nm ~ 750nm range.

Model : CM110

Monochromatorf/# : 3.9
Grating : Two gratings can be installed (ref, CM Gratings)
Interface : RS232 standard

Model : ASB-XE-175EX, ASB-XE-175BF, ASB-XE-175BFEXLight Source

Power : 175 Watts
Bulb Light Power : 800 ~ 4,700 lumens
Bulb Life : 1000 hours typical, 500 hours minimum

Accessories &Options

Order sorting filter holder : AB202 included.
Order sorting filter : AB3XXX series (sold separately).
Fiber coupling output : AFCM-L-XX, XX: SM-SMA, FC-FC, CS-Ferrule. Sold separately.

www.spectralproducts.com

Light Sources

Simple, Flexible

90Spectral Products

4. Deuterium & Tungsten-Halogen Hybrid Based•Variable narrowband light output selection from deep UV (180nm) to Near IR (2.6μm)•Computer controlled via standard RS232 interface•Scans in both directions and in nanometers, Angstroms,
microns, wave-numbers, or eV•May be configured for optimal fiber optic illumination•Modular design allows for reconfiguring•Couples to Spectral Products equipment

Simple, Flexible
Spectral Products has a tunable light source to meet yourneeds. Each model is based on our popular CM110 dual grating,
1/8-meter monochromator, paired with one of Spectral Products'
Deuterium & Tungsten-Halogen hybrid light sources.

Light Sources

ModelsASTN-D1-W050 : One 30W deep UV Deuterium & 50W Tungsten-Halogen model.
ASTN-D1-W075 : One 30W deep UV Deuterium & 75W Tungsten-Halogen model.
ASTN-D1-W100-L : One 30W deep UV Deuterium & 100W low color temperature Tungsten-Halogen model.
ASTN-D1-W100-H : One 30W deep UV Deuterium & 100W high color temperature Tungsten-Halogen model.
ASTN-D1-W150 : Two 30W deep UV Deuterium & 150W Tungsten-Halogen model.
ASTN-D2-W050 : Two 30W deep UV Deuterium & 50W Tungsten-Halogen model.
ASTN-D2-W075 : Two 30W deep UV Deuterium & 75W Tungsten-Halogen model.
ASTN-D2-W100-L : Two 30W deep UV Deuterium & 100W low color temperature Tungsten-Halogen model.
ASTN-D2-W100-H : Two 30W deep UV Deuterium & 100W high color temperature Tungsten-Halogen model.
ASTN-D2-W150 : Two 30W deep UV Deuterium & 150W Tungsten-Halogen model.

Model : CM110

Monochromatorf/# : 3.9
Grating : Two gratings can be installed (ref, CM Gratings)
Interface : RS232 standard

Model : ASBN-D1-W series, ASBN-D2-W series

Light Source

Power : Deuterium: 30 Watts, Tungsten-Halogen: 50 ~ 150 Watts
Bulb Life : Deuterium: 1000 hours typical, 500 hours minimum,
Tungsten-Halogen: 50 ~ 2,000 hours

Accessories &Options

Order sorting filter holder : AB202 included.
Order sorting filter : AB3XXX series (sold separately).
Fiber coupling output : AFCM-L-XX, XX: SM-SMA, FC-FC, CS-Ferrule. Sold separately.

Section VI : AB Series Filter Wheels

AB Series Automated Filter wheels
AB300-T - Automated Six Position Filter Wheel
AB301-T - Stand-alone Automated Six Position Filter Wheel
AB302-T - Stand-alone Automated Five Position Filter Wheel
AB303-T - Stand-alone Automated Twelve Position Filter Wheel
AB304-T - Stand-alone Automated Fourteen Position Filter Wheel
AB Series Order Sorting Filters
AB202 Double Filter Box

92

Spectral Products

AB Series
Automated Filter Wheels•Low cost!
•High performance!
•USB2.0 controlled.
..

•Multiple Filter Wheel systems available.

① AB300-T Plug-in and Go with Digikrom•Threaded capture rings allow easy change of filters.

DK240/242/480. 6 positions - 1”filters.

①

Automatic Filter Wheels③④③ AB302-T Stand - alone, 2”filters. 5 positions⑤②② AB301-T Stand - alone ,④ AB303-T Stand - alone ,⑤ AB304-T Stand - alone ,1”filters. 6 positions

1/2”filters. 12 positions

1”filters. 14 positions

Versatile Computer Controlled Filter Wheels..

AB300-T A six position wheel that integrates with SP’s popular Digikrom and monochromators. Plugging directly into the Digikrom,..

resident software commands allow easy manipulation to filter higher order energy. It can also be controlled by your hand-heldcontroller. The AB300 uses 1”diameter filters.
AB301-T stand-alone, six position 1”filter wheel that is stepper motor controlled via USB2.0 and can be used with SP’
s 1/8 metercompact monochromators for order sorting purposes.
AB302-T A stand-alone, five position 2”filter wheel that is ideal for LIDAR applications. Stepper motor controlled, it can be
combined with AB301-T's, AB302-T's, or AB303-T's in multiple filter wheel systems.
AB303-T A stand-alone, twelve position 1/2" filter wheel that is stepper motor controlled. Ideal for multiple monochromatic
illumination applications.
AB304-T A stand-alone, twelve position 1”filter wheel that is stepper motor controlled. Ideal for multiple monochromatic
illumination applications.
Inexpensive Monochromators When used with narrowband interference filters, you can select up to twelve specificbandpasses for monochromatic illumination. This provides maximum throughput with excellent stray light rejection.
Applications Not only are these filter wheels ideal for use with monochromators, spectrographs and spectrophotometers, but they
can be easily integrated with microscopes, flow cytometers, fluorimeters, and fluorescence photometers. Neutral density filters willallow for photometric linearity and dynamic range studies. Modern communication multiplexing capabilities provide the capability of
combining any number of these filter wheels together in an integrated system. Call with your custom or OEM requirements.

Spectral Products

93

Controller Box(for use with AB301-T, AB302-T,
AB303-T, AB304-T)

AB300-T

Dimensions in Inches
Drawings Not to Scale

AB302-T
AB304-T

Accuracy :AB300-T/AB301-T/AB303-T/AB304-T± 0.004”from center of optical axis
AB302-T± 0.030" from center of optical axis
Filter Change Speed :AB300-T 0.5 second per position
AB301-T 0.5 second per position
AB302-T 1.1 second per position
AB303-T 0.25 second per position
AB304-T 0.50 second per position
Drive : Stepper Motor
Capacit :AB300-T Six 1.0”diameter filters
AB301-T Six 1.0”diameter filters
AB302-T Five 2.0”diameter filters
AB303-T Twelve 0.5”diameter filters
AB304-T Twelve 1.0”diameter filters
Clear Aperture/Maximum Filter Thickness :AB300-T Slot 1.0”x 0.44”/ 0.25”thick
AB301-T 0.875”Ø / 0.25”thick
AB302-T 1.825”Ø / 0.50”thick
AB303-T 0.400”Ø / 0.25”thick
AB304-T 0.875”Ø / 0.25”thickControl : DCE, 8 bits protocol, no parity, 1 stop bit, USB2.0 (GPIB
optional), baud rates programmable.
Software : Demo program and LabViewⓇ driver provided.
Manual Control : Push button switch with 1 position advance

Ordering Information: Please indicate product number plus
description when ordering.
AB300-T

AB301-T

AB302-T

AB303-T

AB304-TSix position, 1" diameter Automatic
Filter Wheel..
Assembly, for use with Digkrom DK240/242/480
monochromators. Power and Control supplied
through monochromator.
.. Filter Wheel
Six position, 1" diameter Automatic
Assembly, for use with Digikrom CM110/112
monochromators, stand-alone, or in multiple
systems.
Five position, 2" diameter Automatic Filter Wheel
Assembly, for use as stand-alone or in multiple Filter
Wheel systems.
Twelve position, 1/2" diameter Automatic Filter
Wheel Assembly, for use as stand-alone or in
multiple Filter Wheel systems.
Twelve position, 1" diameter Automatic Filter
Wheel Assembly, for use as stand-alone or in
multiple Filter Wheel systems.

(All Filter Wheels come with appropriate cabling, power
supply, and mounting flanges for turn-key operation. Cable tocomputer supplied by customer or selected separately fromPrice List.)
Options AB Series Filters
Blocking plugs - Call for Quote.
Multiple Systems - Call with Requirements.

www.spectralproducts.com

Automatic Filter Wheels

Specifications :AB301-T
AB303-T94

Spectral Products

AB Series
Order Sorting Filters•Provides blocking of light radiation below filter specific transition or cut-on wavelength.
•Made from semi-conductor material.
•Allows for various mounting options.
•Offers several filter choices.

Automatic Filter Wheels

Select Light Radiation Easily
The AB30XX Series of Long Pass Order Sorting Filters provide blocking of light radiation below the filter specific transition or cut-on
wavelength.
They can be mounted in the AB202 Filter Carrier or in the AB300 Automated Six Position Filter Wheel. The AB202 Filter Carrier isinserted into the AB200 Filter Mount Assembly. The AB3032, AB3058, AB3066. AB3072, and AB3085 are long-wave pass, color glass
filters and are available in 25.4 mm diameter.
The average high transmittance (TH) of the color glass filters is greater than 90%. The average high transmittance value is the averagetransmittance of the filter between the first peak after the cut-on wavelength to the peak before the cut-off wavelength. The transitioninterval of the AB30XX Series Filters is listed in the following table. The transition interval is the distance (nm) from the cut-on
wavelength to the cut-on peak.
The AB3100, AB3190, AB3300, AB3370, AB3720, AB3400, and the AB3840 Order Sorting Filters are made of semiconductormaterials. These long-wave pass filters are anti-reflection coated for operation from the longpass wavelength to at least twice thatwavelength.
The average high transmittance for the AB3100, AB3190, AB3400, and AB3840 filters is greater than 75%.
These long-pass semiconductor filters are 1 inch (25.4mm) diameter with a thickness of 0.083" or less (2.1mm). These filters can also
be mounted in the AB201 Filter Carrier or in the AB300 Automated Six Position Filter Wheel.
The blocking average for all of the filters is 0.1% below the passband through the UV wavelengths.

Spectral Products

AB3032
AB305895

AB3072

AB3066
AB3052 AB3040

AB3085
AB30100
AB3190AB3400AB3044

AB3370AB3370AB3720Transmittance curves of Order Sorting Filters
Ordering Information : Please indicate product number plus
description when ordering.
Transition λλT (nm)Transition Tolerance (± nm)△λT

AB3032320

7AB3040400

7AB3044440

7AB3052520

10AB3058580

5AB3066660

5AB3072

720

10
10

Part
NumberSpecifications :Size : 25.4mm ØThickness : 2.1mm typical
Material : Schott optical glass or equivalent
Surface Quality : Commercial polish
Mounting Options : AB300 Series Automated Filter Wheels

Check out our Filter catalog for Many More Filter option.

AB3085850

AB31001000

25AB31901900

35AB33003000

50AB33703700

80AB34004000

150

AB35805800

100

AB37207200

185AB38408400

300

www.spectralproducts.com

Automatic Filter Wheels

AB384096

Spectral Products

AB202
Double Filter Box•Connects to SP Spectral Products instruments including monochromators, light sources, and detectors•Cost effective method for order sorting•Holds one 2.5mm thick filter and one 0.25" thick filter•can adapt a collimating/focusing lens
•Fast and Easy filter changing

Automatic Filter Wheels

Solution for mounting order sorting filters on a monochromator
The AB202 was basically designed to install an order sorting filter that is needed to use with a monochromator. But also it can be usedwith any SP's instrument depending on the requirements.
It can hold two filters with different thicknesses. The filter chamber has enough space so fast and easy filter changing is possible.
The AB202 can accommodate a lens matching the F# of a monochromator to collimate the output lights or focusing collimated input
light onto a detector.

Ordering Information : Please indicate product number plus description when ordering.
AB202 Double Filter Box

Section VII : Sampling Accessories

Integrating Spheres
AT-IS-1
AT-IS-1.5
ISC / ISQ
Attatchment
AT-DIF
References
AT-WRS/AT-BRS
Sample Holders
AT-SHCAT-SHC-4
AT-SHF
CuvetteAT-2-Q-10
AT-4-Q-10
Lens Assemblies
AT-SHL-C
AT-SHL-F

98

Spectral Products

Integrating Spheres
AT-IS-1

AT-IS-1.5

1" diameter Integrating Sphere1.5" Integrating Sphere w/Built-in
Tungsten Light Source•1" Spectralon Integrating Sphere•SMA Detector Port

•1" diameter Integrating Sphere•SMA Illumination Port

•1" Spectralon Integrating Sphere•1/4" Full Size Port

•SMA Detector Port
•SMA Illumination Port

The AT-IS-1 is an ultra compact integrating sphere. Custom milled
Spectralon interior provides excellent diffuse reflectance from 250nm to
2.5 m. It is an excellent light sampling accessory for low level lightapplication that requires the use of an integrating sphere.

ISC/ISQ Integrating Spheres
1" diameter Integrating Sphere
Sampling Accessories•Integrating sphere with classical exterior or
cubical exterior.
•Machined port plugs match interior spherecurvature.

•1/4" Full Size Port
Designed for color applications, this compact 1.5" integration sphere andlight source can also be used as a low cost diffuse (uniform) light source forshort distance applications. Standard unit includes SMA detector port
connection and detector collection optic. 1/2" Full Size Port can be placeaganist surface to be analyzed; small objects can also be inserted foranalysis. Custom milled Spectralon interior provides excellent diffuse
reflectance from 250nm to 2.5 m. Detector port can also be directlyinterfaced to Spectral Products' SM2xx series and SM4xx series
spectrometers.

•Post mount or slit flat (for cubical model).
ISC series are classical spherical type integrating spheres and they come standard with Ba2SO4 coating (effective from 400nm-2400nm and four orthogonalports. Wall construction is cast aluminum (allows use of set screws).
ISQ series use the heavy duty construction. Each sphere is composed of two halves, each machined from solid aluminum stock. Like ISC series, standard
ISQ spheres come with Ba2SO4 coating, four orthogonal ports. Sphere can sit flat on work surface or be mounted on an optical mount post.
Depending on the application situation, some port plugs, port reducers, or a fiber adapter can be provided. The available models are as follows.
ISC Series
Model

ISQ Series

ISC-020

ISC-040

ISC-060

ISQ-020

ISQ-040

ISQ-060

Diameter

2"

4"

6"

2"

4"

6"

Port size

0.5"

1.0"

1.5"

0.5"

1.0"

1.5"

How to Select and Size an Integrating Sphere
In order to select the Spectral Products Integrating Sphere that is best suited for your application, several factors must be taken into consideration. The mostimportant factors include the following:
Diameter/Source Ratio The diameter of the sphere should be at least 1.5 times the largest dimension of any device mounted within the sphere.
Surface-to-Port Area If ports cover more than 5% of the Integrating Sphere's surface, the Integrating Sphere may not integrate properly. If port requirements
are greater than 5% of the sphere, a larger sphere should be purchased.
The following formulas can determine port area and sphere surface area:•r Port radius, D Sphere Diameter•Port Area

2

•Sphere Surface Area 42Integrating Sphere Coatings The coating of a Spectral Products Integrating Sphere is a high efficiency diffuse reflector that delivers reliable integration andlow throughput loss. The reflectance is high in order to minimize absorption loss from multiple reflections, yet it must not reflect light specularly.
Spectral Products Integrating Sphere Coatings offer reflectance efficiencies between 95 and 99%. A Lambertian Source is a perfect diffuse source. When aperfect diffuse reflector is illuminated with uniform intensity, it acts as a Lambertian Source. Spectral Products uses a proprietary Ba2SO4 coating, effectivefrom 380 up to 2400 nm, to provide these state-of-the-art Lambertian properties.

Spectral Products

Attachments

References

AT-450AT-WRS/AT-BRS

Reflectance attachment 5W tungsten-halogen light source

White / Black reflectance standards forbuilt-in 45°illuminating and 0°viewing geometr Diffused

diffused reflectance measurement use.

99

reflectance/Color measurement

AT-SHCAT-SHC-4

AT-SHF

Two Port Cuvette Holder.

Four Port Cuvette Holder.

Two Port Filter Holder.

Supports 1/2" x 1/2" cuvettes Supports SMA or

Supports 1/2" x 1/2" cuvettes

Reconfigurable design fits almost any 1.00"

FC fiber connection

Supports SMA or FC fiber connection

filter up to 6mm thick filter

The AT-SHC Two Port Cuvette Holder allows FC

The AT-SHC-4 Four Port Cuvette Holder allows

or SMA fiber connection for sample transmission

FC or SMA fiber connection for sample

and absorbtion studies.

transmission, absorbtion and especially

Included cover excludes ambient light.

fluorescence studies.

Holder also allows insertion of a reference filter

Included cover excludes ambient light.

(1.5"x1.25"x.075" max. dimensions) for system

Holder also allows insertion of a reference filter

calibration.

(1.5"x1.25"x.075"max. dimensions) for system

The AT-SHF Two Port Filter Holder allows FC
or SMA fiber connection for sample transmission and absorbtion studies. Included coverexcludes ambient light.

calibration.

www.spectralproducts.com

Sampling Accessories

Sample Holders

100

Spectral Products

CuvetteAT-2-Q-10
UV Quartz Cuvette, 12.5mm X 12.5mm X 45.0mm,
170nm ~ 2700nm, 2 polished window, 10mm path length,
For Absorption and Transmittance Application

AT-4-Q-10
UV Quartz Cuvette, 12.5mm X 12.5mm X 45.0mm,
170nm ~ 2700nm, 4 polished window, 10mm path length,
For Absorption, Transmittance and Fluorescence Application

Sampling Accessories

Collimating / Focusing assembly with lensfor sample holders
AT-SHL-C 1/2" Collimating/Focusing assembly with one lens. UV grade Fused Silica (200nm ~ 2000nm)
AT-SHL-F 1/2" Focusing assembly with two lenses. UV grade Fused Silica (200nm ~ 2000nm). For Fluorescence application.
Anti-Reflection Coatings

available.

DU : Deep UV range(200nm~250nm),
UV : UV range(250nm~400nm),
VS : Visible range, Shorter(320nm~600nm),
VL : Visible range, Longer(400nm~700nm),
IS : NIR range, Shorter(650nm~1100nm),
IL : NIR range, Longer(1050nm~1700nm)

Section VIII : Optical Fibers and Adapters

Optical Probes
Dip Probes
Dip Probes Tips
Reflectance Probes
Optical Fibers
Standard Fibers
Special Fibers
AF-L Series
f/# Matching Fiber Optic Adapters

102

Spectral Products

Optical Probes
Spectral Products offers fiberoptic probes for use in fluorescence / Raman / diffuse reflection applications (reflection probes)
absorbtion / transflectance applications (dip probes).
These dip probes offer the highest throughput in the industry.
Throughput data (transmission efficiency) sent with every probe.
Superior design minimizes stray lights : bubbles & trapped liquid
Available in all industry standard terminations
Custom instrument / process interfaces or configurations.
Fixed pathlength or removable tip for dip probesSame unit can be used for several measuring techniques
UV, UV/VIS and VIS/NIR versions
Custom configurations available.
Optical Fibers & Adapters

Part number Notation(R or D)P(OOOO)-(XX)(YY)-(U or I)(oo)(-NS)
Keyword
Probe Type (R or D)
Core Size (OOOO)
Connector Type (XX)(YY)

Description
Reflectance Probe: RP
Dip Probe: DP
OOOO micron, ex) 0600: 600um
SMA-905: SM
FC: FC
Ferrule: FRex) SMFC : one SMA-905 end and one FC end
In Case of the bifurcated fiber, "XX" is for the bifurcated ends and "YY" is for the joint end.

Wavelength range (U or I)
Fiber length (oo)Non-solarizing option (-NS)

U: UV / VIS (250-1150nm), I: VIS / NIR (400-2250nm)
oo: oo/10 meter, ex) 20: 2.0m, 15: 1.5m
NS: Non-solarizing for deep UV (190-1150nm)

Spectral Products

103

1. Dip Probes
Part Numbers

Description

DP0200-SMFR-U20

Std Transflection Dip Probe for 200μm 2m length, UV / VIS (Requires a Tip)

DP0200-SMFR-U20-NS

Std Transflection Dip Probe for 200μm 2m length, UV / VIS NonSola rizing (Requires a Tip)

DP0200-SMFR-I20

Std Transflection Dip Probe for 200μm 2m length, VIS / NIR (Requires a Tip)

DP0400-SMFR-U20

Std Transflection Dip Probe for 400μm 2m length, UV / VIS (Requires a Tip)

DP0400-SMFR-U20-NS

Std Transflection Dip Probe for 400μm 2m length, UV / VIS NonSola rizing (Requires a Tip)

DP0400-SMFR-I20

Std Transflection Dip Probe for 400μm 2m length, VIS / NIR (Requires a Tip)

DP0600-SMFR-U20

Std Transflection Dip Probe for 600μm 2m length, UV / VIS (Requires a Tip)

DP0600-SMFR-U20-NS

Std Transflection Dip Probe for 600μm 2m length, UV / VIS NonSola rizing (Requires a Tip)

DP0600-SMFR-I20

Std Transflection Dip Probe for 600μm 2m length, VIS / NIR (Requires a Tip)

Optical Fibers & Adapters

2. Dip Probe Tips
Part Numbers

Description

DPT-002

Transflection Dip Probe Tip Path Length 2μm

DPT-005

Transflection Dip Probe Tip Path Length 5μm

DPT-010

Transflection Dip Probe Tip Path Length 10μm

DPT-020

Transflection Dip Probe Tip Path Length 20μm

3. Reflectance Probes
Part Numbers

Description

RP0100-SMFR-U20

100μm 6 around 1 Stainless Steel Probe Body UV/VIS

RP0100-SMFR-I20

100μm 6 around 1 Stainless Steel Probe Body VIS/IR

RP0200-SMFR-U20

200μm 6 around 1 Stainless Steel Probe Body UV/VIS

RP0200-SMFR-I20

200μm 6 around 1 Stainless Steel Probe Body VIS/NIR

RP0400-SMFR-U20

400μm 6 around 1 Stainless Steel Probe Body UV/VIS

RP0400-SMFR-I20

400μm 6 around 1 Stainless Steel Probe Body VIS/NIR

RP0600-SMFR-U20

600μm 6 around 1 Stainless Steel Probe Body UV/VIS

RP0600-SMFR-I20

600μm 6 around 1 Stainless Steel Probe Body VIS/NIR

www.spectralproducts.com

104

Spectral Products

Optical Fibers
Spectral Products offers a complete line of silica core optical fibers and patch cord assemblies. Standard assemblies are listed
below. Please call if you don't see what your looking for, have questions, or have a custom requirement!
Standard assemblies are sheathed in crush resistant black PVC covered flexible galvanized steel monocoil.
Fiber core sizes :Single Fibers: 50um, 100um, 200um, 400um, 600um and 1000um. Other core sizes (up to 1000nm) are possible
Bifurcated Fibers: 100um, 200um and 400um.
Sheathing options : PVC with Kevlar reinforcement , PVC Monocoil (Standard) , Flexible stainless steel interlock , Polyimide
Tefzel , Acrylate , Nylon
Connector options : SMA-905 (Standard) , 10mm ferrule , FC (Standard) , Other custom connectors are available

Optical Fibers & Adapters

Part number Notation :1. Standard Fibers(S or B)F(OOOO)-(XX)(YY)-(U or I)(oo)(-NS)
KeywordFiber Type (S or B)
Core Size (OOOO)
Connector Type (XX)(YY)

Description
Single Fiber: SF
Bifurcated Fiber: BF
OOOO micron, ex) 0600: 600um
SMA-905: SM
FC: FCex) SMFC: one SMA-905 end and one FC end
Note :
In case of the bifurcated fibers, "XX" is for the bifurcated ends and "YY" is for the joint end.

Wavelength range (U or I)
Fiber length (oo)Non-solarizing option (-NS)

U : UV / VIS (250-1150nm), I: VIS / NIR (400-2250nm)
oo : oo/10 meter, ex) 20: 2.0m, 15: 1.5m
NS : Non-solarizing for deep UV (190-1150nm)

Ex)
SF0100-SMFC-U20 : single fiber, 100um core size, SMA (905) to FC fiber connection type, UV / VIS range, 2.0m length
BF0200-FCFC-I10 : bifurcated fiber, 200um core size, FC to FC fiber connection type, VIS / IR range, 1.0m lengthSpectral Products

105

2. Special Fibers
Part Number

Description

AF5000-50001111-DUV10S

Liquid-guided, Round-Round, 0.43 NA (1.2 F#), Ferrule, 1m, S Type (220nm ~ 600nm)

AF5000-50001111-UV-Vis10S

Liquid-guided, Round-Round, 0.59 NA (0.85 F#), Ferrule, 1m, V Type (300nm ~ 650nm)

AF5000-50001111-Vis10S

Liquid-guided, Round-Round, 0.59 NA (0.85 F#), Ferrule, 1m, V Type (340nm ~ 800nm)

AF5000-50001111-Vis-NIR10S

Liquid-guided, Round-Round, 0.52 NA (0.96 F#), Ferrule, 1m, I Type (420nm ~ 2000nm)

Optical Fibers & Adapters

www.spectralproducts.com

Spectral Products

106

Optical Fibers & Adapters

Spectral Products

107

AF-L Series
f/# Matching Fiber Optic Adapters•High efficiency.
•Enables precise alignment.
•Provides a broad spectral range with UV grade lenses.
•Allows quick connect/disconnect while maintaining alignment.
•Use on input or output ports.
•Connects SMA, FC/PC, ST, or 10mm diameter Fiber Connectors.

Optical Fibers & Adapters

The AF-L Series of Fiber Optic Adapters will optically match the Numerical Aperture of a SP fiber (NA 0.22) to the f/# of a SP
Monochromator or spectrograph while mechanically joining the two.
As an input adapter, the AF-L Series focuses the light from the fiber onto the entrance slit. The magnified fiber image fills more of theslit. All of the light entering the slit strikes the grating. The efficiency of this coupling is 4 to 20 times better than a direct non-matchedcoupling.
As an output adapter, the AF-L Series focuses the light from the exit slit onto the fiber. The demagnified slit image concentrates lightonto the fiber's face and takes advantage of the fiber's“faster”collection angle. The efficiency of this coupling is 2 to 4 times better
than direct non-matched coupling.
These dramatic increases in efficiency support applications where low light levels make direct fiber coupling impractical. Fluorescenceanalysis, spectral analysis of LEDs and laser diodes, and detector characterization all benefit from this efficiency. Fibers used as
detection probes with the AF-L Series can take full advantage of their inherent wide acceptance angle for increased light collection.
Fibers used as illumination probes with the AF-L Series can deliver up to 4 times more intensity than with direct coupling. In addition,
the fiber will illuminate over its full Numerical Aperture.
The AF-L Series allow three axes of precise fiber translation translation. Precision of better than 0.001”in linear
movement is typical. Because UV lenses are standard, the AF-L Series provides better than 90% transmission from 200nm to 1900nm.

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Optical Fibers & Adapters

Ordering Information: Please indicate product number plus
description when ordering.
f/# matching Fiber Optic Adapter for
CMSeries monochromators/spectrographs
AFCM-L-SM with SMA end plate
AFCM-L-FC with FC/PC end plate
AFCM-L-ST with ST end plate
AFCM-L-CS with 10mm ferrule end platef/# matching Fiber Optic Adapter for
DK240/DK242 monochromators/spectrographs
AFDK240-L-SM with SMA end plate
AFDK240-L-FC with FC/PC end plate

Specifications :Adjustment :X and Y Axes : 80-pitch adjustment screws, 0.0002”linear
movement for 5°of adjustment screw rotation;
10mm range
Z-Axis : 0.0005”linear movement for 5°of collar rotation; 5mm
range
Wavelength Range : 200-1900nm @ >90% transmission
Warranty : One year

AFDK240-L-ST with ST end plate
AFDK240-L-CS with 10mm ferrule end platef/# matching Fiber Optic Adapter for
DK480 monochromators/spectrographs
AFDK480-L-SM with SMA end plate
AFDK480-L-FC with FC/PC end plate
AFDK480-L-ST with ST end plate
AFDK480-L-CS with 10mm ferrule end plate

Section IX : Application & Selection Guide

OES & EPD

Lasers as Light Sources with Spectrometers

Infrared Spectroscopy

Maximizing Performance for SP Instrumentation

Colorimetry & Photometry

Applications with SP Instruments

Film Thickness Measurement

Constant Energy or Bandpass Spe trophotometry

Fluorescence

Dual Excitation Microfluorescence

Raman Spectroscopy

Time Domain Spectroscopy

Direct Digital Drive

Portable Radiometry

Subtractive Dispersion Spectrometers

Detection Systems for Tunable Lasers

Homogenous Excitation Energy

Spectrometer Selection Guide

Timed Resolved Laser Spectrometry

Plane and Holographic Gratings

Monochromatic Imaging

Gratings and their Selections

Digikrom and SpectraM Slits

by Required Bandwidth or Dispersion

Array Spectrometers

by Required Throughput

Anastigmatic Imaging

by Stray Light Level

Miniature Spectrometers

by Application

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Infrared Spectroscopy
Our NIR(Near-Infrared) spectrometers use various NIR array detectors(InGaAs, PbS, PbSe) and measure spectral ranges from
0.9um to 5.0um. By measuring the NIR spectrum, we can analyze the components of a material quantitatively. With scientificalgorithms like chemometrics, we can realize higher repeatability and faster analysis than traditional physical and chemical analysis
methods.
We developed an NPK analyzer with our NIR spectrometer (SM301) to measure the amount of nitrogen, phosphor and potassium inlivestock liquid manure. It analyzes the correlation between acquired values from traditional physical and chemical method and NIR
spectrum data with statistical algorithms.

Application & Selection Guide| Diagram of Application || Near-Infrared NPK analyzer || Software of NPK analyzer || Chemometrics Algorithm |www.spectralproducts.com

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Colorimetry & Photometry
Spectrometers can measure and analyze colorimetric and photometric characteristics of LED (Light-Emitted Diode), OLED(OrganicLED) and display devices. By quantitative analysis of radiometric and photometric values, we can measure optical properties andmaintain the quality of color devices using CIE color coordinates.
Now, the demand for LED light sources is tremendously explosive and our spectrometers are widely being used in various LED
measurement systems for standardized color quality control in industrial field.

Application & Selection Guide| Diagram of Application || Simple Measurement System for CIE color values || Software for Color Measurement |Spectral Products

113

Film Thickness Measurement
By use of our spectrometer in reflectometric and ellipsometric systems, we can measure film thickness, index of refraction, andvarious optical properties of films.
Spectrometers are being used in the manufacturing of semiconductor and display devices, optical monitoring of optical coating, andSPR(surface plasma resonance) systems. As well as spectrometers, our monochromators (CM110 etc) are used as the main OEM
module for semiconductor inspection and spectroscopic ellipsometer systems.

Application & Selection Guide| Diagram of Application || Spectroscopic Ellipsometer || Spectroscopic Ellipsometer |www.spectralproducts.com

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Fluorescence
The measurement of fluorescence, phosphorescence,and opto-chemical emission spectrum are required inmany applications like organic and inorganic fluorescence
property studies, chemical property analysis, and theresearch for the components and their lifetimes of somegases.
The array detector based or monochromator based
spectrometer systems are basically used in this field. And
the application of the spectrometers is being expended tothe studies of the DNA structures and testing thecondition of foods, and many more biological and medical
applications.?Our spectrometers are also used in various
luminescence applications.
Application & Selection Guide| Diagram of Application |Spectral Products

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Raman Spectroscopy
Spectrometer systems are also the basic instruments formeasuring Raman scattering in the chemical components
analysis, the researches for the structure, stability andbiological properties of various materials. Because there
is no interference between Raman scattering and water,
Raman spectroscopic method can acquire a lot of
information from any solid, liquid and gas materials moreeasily than any traditional FT-IR methods.
There are a lot of needs for the portable Raman systems inthese days. Spectral Products' back-thinned TE Cooled CCD
spectrometer (SM303) has a compact design with high signal
to noise ratio and high dynamic range so it can be a goodcandidate for the portable Raman applications.

(Spectral Optics) in the optical coating industry, we believe that we can serve and fulfill customers' requirements and demands inconfidence.

| Diagram of Application |www.spectralproducts.com

Application & Selection Guide

The Fluorescence and Raman spectroscopy require good cut-off filters. With the accumulated experiences of our Optics Division

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Direct Digital Drive for Digikrom Products - Simple, Rugged, Reliable
In 1987 We introduced the first change in grating drives in more than 50 years. Using digital electronics, We replaced the unreliablemechanical linkages that were used to translate the rotary motion of the drive motor into the sine motion needed for wavelengthlinearity. Photo 1 shows a typical direct drive grating table that SP manufactures. SP named this method Direct Digital Drive andincorporated it into a new line of Digikrom monochromators and spectrographs.
The equation relating grating angle (θ) and wavelength (λ) is the well known non-linear equation,
mλ2dsinθcosØ/2
where Ø is the angle between the central incident ray and the central exiting ray that reaches the exit slit, and θis the gratingrotation from zero order.
In a spectrometer the rotary motion of the drive motor and associated reduction gears linearly determines theta. In sine-drive
instruments a second mechanism, a cam or a sine arm, creates the sine function.
SP Laser replaced the mechanical sine mechanism with digital electronic calculation of sine (theta). When a wavelength is input to a
Digikrom monochromator, the internal microprocessor calculates the required sine (theta) and the corresponding angle theta. In about
Application & Selection Guide

500 microseconds this calculation finds the number of stepping motor steps required toreach the angle corresponding to the wavelength. This would not have been possible
without the microprocessor revolution that permits inclusion of a micro-controller withineach instrument at a reasonable cost.
The advantages of Direct Digital Drive are significant. The mechanical mechanism is
simpler and more reliable. Calibration is easier and more accurate. A multi-grating turretwith automatic grating change becomes a simple, inexpensive option. Finally, inclusion of a
micro-controller with each spectrometer makes computer control of the spectrometereasy. These advantages come with a price reduction because of the replacementof expensive mechanical parts with inexpensive, reliable electronics.
Both Direct Digital Drives and conventional sine drives use a stepping motor,
which typically rotates 0.9 degrees per step. The stepper motor rotation is
reduced via gear reduction. But, at this point the traditional sine-drive becomescomplex.
In the traditional sine-drive, the gear reduction is typically a 5:1 worm andwheel. This output then rotates a lead screw that moves a nut along the opposite
side of a right triangle. A precision slide is needed to prevent the nut fromrotating as it translates. A hypotenuse arm pivots around the axis of rotation of the grating to follow the nut. As the arm pivots, it rotates
the grating proportional to the sine of the angle.
In Direct Digital Drive, a 120:1 worm and wheel gear reduction connects the stepping motor directly to the rotational shaft of thegrating. No other mechanism is necessary. Only a single precision worm and wheel is used. There are fewer parts to wear or breakand no tolerance errors accumulate as in cascaded mechanisms.
Calibration is easier with the Direct Digital Drive. Only two points - the slope and intercept - need to be specified to calibrate thegrating equation. The intercept is optical zero; at optical zero, theta is zero, m is zero, the grating acts like a mirror, and thespectrometer transmits white light. The slope, 2dcosØ/2 is found from the angle θat a known wavelength.
In the traditional sine drive it is quite difficult to make the mechanical zero of the sine function mechanism equal to the optical zero.
While optical ero can be determined precisely as the point of specular reflection, the mechanical zero can only be determined withmechanical gauges or complicated calculations derived from the errors at multiple calibration wavelengths. In fact, a separate rotational
adjustment is needed on each grating in a sine-drive system to make the mechanical and optical zeros coincide.
In Direct Digital Drive, the sine function is electronic, and the electronic sine function is reset to begin at the optical zero. The
correspondence between the optical zero and the zero of the sine function is then exact. When power is applied to a SP Spectrometer,a predetermined position in the mechanical rotation - the home position - is detected. The grating then rotates to optical zero. The
offset angle between home and optical

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zero has been previously stored in the microprocessor memory. If the optical zero is incorrect - for example, if gratings were changed the user commands further grating rotation until optical zero is identified. The micro-controller remembers the new offset angle.
Calibration is thus simple and exact.
Direct Digital Drive also allows the option of a multiple grating turret with automatic grating change, see Photo 1. This is atremendous advantage when a wide spectral range needs to be covered because the entire range can be studied without
disassembling, realigning and recalibrating the spectrometer to replace gratings.
The worm and wheel mechanism allows 360° rotation of the grating turret, so it is possible to have two or more gratings on the same
turret. This is not possible with the traditional sine-drive, which is limited to about 70 degrees of total rotation. Direct Digital Drive makes
the multiple grating turret simple and inexpensive.
In addition, with proper design of the dual or triple grating turret, no vignetting results from the translation on the front face of thegrating as it rotates around the central axis. The final enhancement of the Direct Digital Drive is the additional capacity inherent inincluding a micro-controller in the spectrometer. The included micro-controller allows a simple interface, motorized slit control andautomatic grating change at little additional cost. The simple interface is the biggest advantage. It is now unnecessary for the user tobuild a stepper motor interface or to buy additional motor drive boxes. The micro-controllers in Digikrom spectrometers accept simple
commands over an RS232C serial interface from any computer.

spectrometer makes computer control easy. Finally, with expensive mechanics replaced by low cost electronics, the price is less.

Subtractive Dispersion Spectrometers
When we think of a spectrometer we envision white light entering and being dispersed by a prism or grating and exiting in adispersed spectrum across an arc.This is the archetype of spectral dispersion. If wereverse this process, an arc of color enters the prism or grating and a homogenous
white light exits. This reversal is called spectral recombination. When we couple thisspectral dispersion followed by spectral recombination we have created an opticalcuriosity called subtractive dispersion.Today, time-resolved spectroscopy and imaging
applications are reviving interest in this technique. (Figure 1) Two Digikrom models, theDK242 and the CM112, employ it.
A simple subtractive dispersion monochromator appears in the figure at right. The
instrument consists of coupled grating monochromators. White light enters the entranceof the first monochromator and is dispersed across the shared intermediate slit. Theintermediate slit, for example, blocks red and blue but passes yellow and green. The
second monochromator is designed for spectral recombination. The yellow and green
rays that enter the intermediate slit at different positions and angles are recombined
into a beam that is spectrally homogenous across the exit. The second monochromator
has no influence on the spectral transmission. The entrance and intermediate slits

Figure 1. Diagram of a subtractive
monochromator.

determine the bandpass. The exit slit is almost superfluous; yet the light emerging from the exit has a very useful uniformity.

Homogenous Excitation Energy
One of the earliest applications of subtractive dispersion was in the excitation side of spectrofluorometers. In a typical
spectrofluorometer, light from an arc lamp is filtered by a monochromator and directed to a sample cuvette (Figure 2). This narrow
bandwidth energy induces fluorescence at different wavelengths. A monochromator/detector combination looks at this emitted
fluorescence. If the excitation section of the fluorometer uses an ordinary monochromator, then the illumination of the cuvette will vary
spectrally with the position of the cuvette.
Subtractive dispersion homogenizes the beam so that each area in the cuvette sees the same spectral excitation, resulting inincreased accuracy. Similar considerations apply to both the detection half of fluorometers and to spectrophotometers. In both,
subtractive dispersion has been used to make spectral transmission independent of physical position.

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Application & Selection Guide

The advantages of Direct Digital Drive are clear. The mechanics are simple and more reliable. Calibration is easier and moreaccurate. A multi-grating turret with automatic grating change is a simple, inexpensive option. Inclusion of a micro-controller with each118

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A bonus in the use of subtractive dispersion in fluorometry is reduction of stray light. Stray light in a monochromator originates
primarily in scattering at the surface of the grating. Not only is the diffracted light of the desired wavelength directed to the exit slit, butalso light that is scattered from scratches, pits, dust and imperfections from the ruling process. The second monochromator acts as afilter for this scattered light reducing it by almost the square of the ratio for a single instrument.

Timed Resolved Laser Spectrometry
The advent of time-resolved laser spectroscopy in the sub-nanosecond regime
has created a new application for subtractive dispersive instruments. A conventional
single monochromator introduces not only spectral dispersion, but temporaldispersion as well. The temporal dispersion originates in the unequal optical path
lengths in the diffraction from the grating.
In Figure 3, the plane wave AB strikes the grating and the diffracted wave is CD.
The path of the light that is diffracted from the left edge of the grating, ALC, is longer
than the path of the light that strikes the right edge of the grating, BRD. The path
Application & Selection Guide

difference, W * sin θ, gives a temporal dispersion of W * sin θ/c. With a typical 68mm
wide grating used near 30 degrees, a temporal broadening of l00 picoseconds is theresult. A subtractive dispersion instrument removes this instrumentally induced
temporal dispersion. The second monochromator introduces an equal and opposite
delay across the face of its grating. The degree of cancellation is only limited by the
optical aberrations of the systems. In the DK242 and CM112, sub-picosecond
residual broadening results.

Figure 2. Diagram of a typical fluorometer.

Monochromatic Imaging
Monochromatic imaging can also benefit from subtractive dispersion. Imaging
objects at monochromatic wavelengths has grown from its roots in the Lyman-alphamappings of the sun. Fluorescent imaging of biological materials now permits direct
measurements of positively charged ion concentrations in living cells. Combustion
analysis also relies upon optical mapping. In many cases this mapping is being
done with filters because of the image smear introduced by a conventional
monochromator. Imaging through monochromators uses one of two methods: theobject is imaged near the entrance slit, or the object is imaged on the grating (atinfinity). In the first method, different wavelength images overlap at the exit slit. In
the second method, the monochromatic images that are passed by the
monochromator exit at wavelength dependent angles.
Figure 3. Temporal broadening caused
by a grating

The subtractive dispersion instrument cancels both effects, making either form of
monochromatic imaging possible. Unlike the conventional monochromator, thesubtractive dispersion instrument offers a one-to-one wavelength-independent correspondence between the positions and angles ofrays at the exit and entrance.
The Digikrom double monochromators employ a single intermediate slit, housing the two optical paths in one integral unit. This
maintains the integrity of the stray light and imaging capabilities while offering ease of use and compactness. As you can see,
subtractive dispersion is becoming a more commonly used technique today. Keep it in mind, whether your application is fluorescence,
spectrophotometry, time- resolved spectroscopy or monochromatic imaging.

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Digikrom and SpectraM Slits - Adjustable and Fixed
Fixed-interchangeable slits are available on all SP eighth-meter monochromators and spectrometers. Computer controlled variable
slits are standard on quarter-meter and larger monochromators and spectrographs. In both cases the slit jaws are thin, typically 25
microns, to reduce tunneling. The materials selected are durable, typically stainless steel, molybdenum, or berylliumcopper. The fixedslits are precisely manufactured so that the width and jaw parallelism is exact to within 5 microns for wide slits and 2 microns for slits
with a width of less than 50 microns. The adjustable slits are interferometrically adjusted at SP to better than 2 micron parallelism andwidth accuracy.
Separation of the slit jaws must be precisely known so that the bandwidth will be exactly known. The slit jaws must be parallel so thatthe bandwidth for light will be the same at the top and bottom of the slit. The entrance and exit slits must be parallel because theentrance slit is imaged onto the exit slit as the grating is rotated. The slit jaws should be thin compared to their separation, so thattunneling does not reduce the acceptance angle of incident light.
The adjustable slits are computer controlled. A stepping motor and precision lead screws are used to change the separation of theslit jaws thereby adjusting the slit width and the monochromator bandpass. When power is first applied to the instrument, the slit jaws
automatically self-calibrate then assume a 50 micron separation. The user from a controller or computer may then program slit width

Array Spectrometers - Multi-channel Detection
with Impr Improved Signal to noise
In recent years the combination of array detector and spectrograph has become the system of choice for spectroscopy. The majoradvantage of the array detector is improvement in detection signal-to-noise (S/N) ratio.
An array of N elements has the capability of collecting N times the signal of a single detector. Observation of N units of time with aspectrograph allows a potential improvement in S/N to N½ opposed to a single detector sampling for one unit of time. Alternatively, N
wavelength bands can be sampled in just 1/N the time required for a single detector to do sequentially for identical S/N. This is termed
the Fellgate advantage.
In practice the improvement in S/N may be reduced due to the following reasons:1) Currently available array elements have limited heights, for example 1 to 2 millimeters at most as opposed to 10 to 20 millimeters
for a non-array detector.
2) Frequently, only 20% of the array elements have an interesting signal.
3) The switching noise associated with the multiplexed readout of some arrays will frequently double the noise level.
4) When the array element width is smaller than the desired bandwidth, several elements must be combined.
Combining the above effects implies a reduction in the estimated improvement by a factor of 10 to 300. Therefore, for an array withsmall number of elements, this improvement becomes insignificant.
Array detection has some other advantages. Very rapid multiple wavelength sampling is possible. Moving parts as in a scanningmonochromator are eliminated.
SP provides the Digikrom line of high performance spectrographs and a wide selection of CCD and InGaAs cameras covering
spectral ranges from UV to NIR.
Our SpectraM product line suits your need for a compact, low cost and high performance CCD spectrometer.

Figure 4. Entrance slit images at the exit with(a) regular optics and, (b) anastigmatic optics

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Application & Selection Guide

and therefore bandwidth.

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Anastigmatic Imaging - Keeping the Images Sharp
Spectrometers, like other optical instruments, exhibit aberrations. Coma, spherical aberration and astigmatism are usually the worst
offenders to a spectrometer performance. A spectrometer such as a Czerny-Turner spectrometer employs a diffraction grating together
with collimating and focusing mirrors. Any aberration introduced by the mirrors will be transformed by diffraction to the exit focal plane.
Using appropriate design parameters can compensate coma in a Czerny-Turner spectrometer. Astigmatism causes a point at theentrance slit to extend tangentially at the exit after image transfer, see Figure 4(a). This extension is primarily attributed to the higher
order aberrations associated with the use of spherical mirrors. In a spectrograph application a two-dimensional detector array is usuallyemployed at the exit focal plane of a spectrometer. The astigmatism can thus cause a serious energy spread. limiting the multichannel spectrometer to a device for virtually single input at the entrance. SP Digikrom series spectrographs offer astigmatism
corrected options. The use of specially designed aspherical optics corrects for astigmatism in the wavefront produced by sphericalmirrors, Figure 4(b). The anastigmatic optics in turn result in highly energy concentrated images at the exit and tightly focused spots.
Multiple inputs along the entrance slit are thus made possible with SP anastigmatic spectrographs.
Figure 5(a) demonstrates a multiple spectral input Raman application by use of a SP spectrograph equipped with a two-dimensional
CCD camera. Four fiber inputs are presented at the entrance as shown in Figure 5(b). SP anastigmatic spectrographs allow for
Application & Selection Guide

inexpensive versatile and multi- functional spectro scopic applications.

Figure 5. Raman spectrometer with anastigmatic imaging and a multiple input fiber.

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Miniature Spectrometers - Compact, Stable, Sensitive, Unique and Low Cost
SP SpectraM miniature spectrometers are packed with great features and performance in a small footprint. The SM series
spectrometers are based on a crossed Czerny-Turner configuration as shown in Figure 6. A light input through the slit, either fiber
coupled or direct coupling is collimated by the first mirror and directed to a diffraction grating. The diffracted ligh is collected by thecamera mirror and focused onto a detector array for detection. The spectrograph is enclosed in a rugged aluminum housing forstability. Connections between the spectrometer and the computer interface are made via a shielded electrical cable. Detector arrays
are also included in the same housing in hand held versions. SM spectrometers can be interfaced to computers via ISA, PCI, PCMCIA,
etcetera. By use of a PCMCIA interface with a notebook computer, Figure 7, the SM spectrometers place a powerful portable
spectrometer system at your fingertips.
It is known that all detectors exhibit“dark signals”originated from thermally agitated electrons. A temperature increase of 7°
C canresult in a doubled dark signal in a silicon-based detector. SP offers cooled SM spectrometers for greater temperature stability for
demanding applications. Uncooled SM spectrometers are also available for low cost detection use. The separation of the spectrometer
module from a heat source such as a computer ensures reasonable temperature stability.
SM spectrometers employ detector arrays with high sensitivity. A sensing element height of 200mm to 2.5mm maximizes thedetector light collection capability. A cylindrical focusing lens in front of the detector array further enhances the effective pixel size. In
enhancement coatings for detector arrays. Our pioneering optics and coating technologies also allow us to take another step further toreduce energy lost between optical surfaces.
As discussed before, all gratings generate higher orders. By use of SP°Øs unique variable filters in SM spectrometers, a widesimultaneous wavelength coverage is achieved free of higher order interferences. Our continuous product development effort is adding
to the uniqueness of our spectrometer line everyday. For example the compact double Czerny-Turner spectrometer from SP, whichneeds only one detector array, is the first in the world.

Collimating
MlirrorCamera Mlirror

Entrance Slit
Grating
CCD Array

Figure 6. Diagram for a crossed Czerny-Turner
spectrograph as employed in SM spectrometers.

Figure 7. Diagram for SM computer-based
miniature spectrometers.

Issues with Using Lasers as Light Sources with Spectrometers
1. Underfilling the grating. The resolution of a monochromator is limited by the number of grating grooves that are illuminated. Written
mathematically:RmN

As an example, an unexpanded HeNe laser with a beam diameter of about 0.3mm used directly on a 1200 groove-per-millimeter
grating in a monochromator will have a best resolution of:
633.2 [nm]/(1200 * 0.3)

0.8[nanometer]www.spectralproducts.com

Application & Selection Guide

addition, for UV and near IR regions where silicon detector response is inherently weak, we provide a variety of sensitivity

122Spectral Products

Expanding a 0.3mm laser beam to fill a 68mm grating can be difficult. One of the simplest ways is to place a diffuser near the slit or use
an integrating sphere, and illuminate that diffuser with a moderately expanded beam. For an f/4 monochromator with a diffuser 4
millimeters from the slit, the beam spot on the diffuser needs to be only a 1 millimeter diameter.
2. Melting the slits. The slits of monochromators are typically stainless steel that tapers to a 0.001”thickness at the tip. Experience
with pinholes has shown that even a few hundred milliwatts (CW) or a fraction of a Joule (Pulsed) will melt 0.001”thick stainless steel.
The best solution is to use a beamsplitter to send only a small fraction of the beam to the monochromator. The 0.3% reflection from anantireflection coated plate is usually more than sufficient for measurement. Another solution is to not use the slit. The laser beam,focussed at the slit plane, will act as its own slit. Be warned, however, that the laser beam will be refocussed by the monochromator at
the exit slit. That exit slit then is in danger of melting.
3. Melting the grating. Grating surfaces are typically micron thick aluminum that is bonded to the glass substrate by a thin epoxy
resin; the aluminum will have about 6% absorption. At high CW powers (about 20kW/cm2) the thermal heating due to the absorption
will cause the epoxy to melt. At high pulsed power (about 2 MW/cm2) the aluminum will ablate. In either case the grating is destroyed.
Application & Selection Guide

The solutions are the same as given in cases One and Two above. The power input into the monochromator can be attenuated. The
beam can be expanded to use the whole grating area. Note that the area of a 68mm grating, 46 cm2, is sufficient for pulse powers of
about 0.1 GW.

Maximizing performance for SP Instrumentation
SP spectrometers are designed to meet the highest performance standards. To ensure the designed performance is achieved, it isalso important that the instruments are set up and optimized.
1. When coupling light into and out of a spectrometer, f#matching is helpful for efficient coupling. f# matching helps tominimize stray light introduced by overfilling the spectrometer
optics. In many instances, a simple aperture behind the coupling
optics works efficiently for this purpose. Figure 8 depicts aspectrometer light coupling system which uses f# matching optics
together with a mechanical aperture.
2. Incident radiation into a spectrometer with a band broader
than necessary may have a negative impact on the instrument°Øs
stray light performance. A tungsten halogen lamp, for example,
emits radiation from about 320nm to over 2000nm. In applications

Figure 8. Diagram illustrating the use of f# matching optics
and mask for coupling light into spectrometers

where only the visible spectrum, 400 to 700nm, is concerned theuse of a band pass filter can minimize the stray light arising from dumping the entire band into a spectrometer. Measurement signal tonoise ratio can thus be improved.
3. All grating instruments exhibit higher diffraction orders originating from the use of diffraction gratings (see also Spectrometer
Basics section). Ignoring the higher orders, especially the second order contribution may result in serious errors. Use of SP filters or
filter wheels may remove the second order. The optimum position for the placement of such a filter is in front of the instrument
entrance whenever possible.
4. Filter wheels are not limited to order sorting purposes. SP’s automatic filter wheels are ideal for usein variable ratio beam splitting,variable beam attenuation and other applications when mounted with appropriate optics.

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5. Fibers operate based on total internalreflections,Figure9.

Lighttransmitting

characteristics for fibers may change with bending
curvature and positioning of coupling. When fiber
input is selected for SP spectrometers it is a goodpractice to minimize the change in fiber bending
curvature during operation. Fibers with precision
positioning couplers, such as offered by SP, arehighly recommended for repeatability and maximum

Figure 9. Fiber operate based on total internal reflections

light coupling.
6. When using scanning monochromators be aware that resolution will be lost if data is not collected at sufficiently fine wavelength
increments. In a continuous scan mode the maximum scan rate at which the instrument resolution will be maintained is also dictated by
the Nyquist theorem. Instrument resolution will degrade with an increase in scan speed exceeding the Nyquist limit.

8. The relationship between the slit widths and bandpasses can be calculated by multiplication of reciprocal dispersion with the slit
width. For example, a monochromator configured with 0.25 millimeter slits and a grating displaying a reciprocal dispersion of 8 nm/mm
has a bandpass of 8 * 0.25

2nm.

9. In array detection on a spectrograph such as a CCD camera mounted onto the DKSP240 spectrograph or a SM240 spectrometer,
the minimum resolution element is three array elements (pixels). As pixels are typically 14 microns wide, the effective slit width is 42
microns in this case. This would equate to 0.3 nanometers on a 1/8 meter spectrograph utilizing a 1200 g/mm grating.

Applications with SP Instruments
SP instrument products have found wide applications in many areas for light illumination,light detection and other usage. It is beyond the scope of this catalog to attempt to cover allthese aspects. However for the benefit to our customers, we demonstrate here some
general application configurations.
Figure 10 illustrates a tunable light source, which consists of a wide band light source anda SP scanning monochromator. The output wavelength can be programmed forcontinuous scan or a selected narrow band.
Figure 11 (next page) shows the above tunable light source equipped with abifurcated fiber for a dual beam type of arrangement. One of the fibers can beused to couple the narrow band light to a sample channel for transmittance,
reflectance, absorption or other measurement use. The second fiber directly
introduces a portion of the narrow band output from the monochromator into areference detection channel. Using the reference channel can compensate any

Figure 10. Tunable light source with a
SP monochromatorpossible fluctuation in the output light intensity in the measurement channel, since they are all derived from the same source. In thissense a so-called“dual beam”or “double beam”system can be established. With SP fiber couplers, light can be introduced in andout of SP spectrometers for flexibility and remote capability.
On the next pages, Figures 12 through Figures 18 review some typical application arrangements with SP SM spectrometers fortransmittance, reflectance, and emission measurements.
SP's monochromators and spectrographs have features that are unduplicated in any other spectrometers. For this reason, they havebeen applied in unique applications. The following are a few examples.

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7. Gratings and other optical components are delicate and precise optics. Any attempt to clean them with inappropriate methods may
cause scratches and other damage, leading to performance degradation.

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Figure 11. Diagram for a dual-beam illumination source
by use of a SP monochromator.

Figure 12. Diagram transmittance / absorbancemeasurement with SM spectrometers

Figure 13. Transmittance / absorbance measurement byuse of a fiber optic immersive probe

Figure 14. Transmittance / absorbance measurement withSM spectrometers via optical fibers.

Spectral Products

Figure 17. Dual-beam transmittance / absorbance setup
involving two SM240 spectrometers connected via fibers.

Figure 16. Direct reflectance measurement performed with a
45°attachment and an SM 240 spectrometer

Figure 18. Dual-beam 45°reflectance measurement by use of two
SM240 spectrometers via fiber connection.

www.spectralproducts.com

Application & Selection Guide

Figure 15. Refiectance measurement with SM spectrometers
by use of 45°configuration via optical fibers.

125

126

Spectral Products

Constant Energy or Bandpass Spectrophotometry
The slits in SP’s larger monochromators are computer controlled. Usually, the slits are set for a particular width. However, when the
monochromator is used in a spectrophotometer it is possible to adjust the slits to maintain constant energy or constant bandpass.
The spectrophotometer consists of a lamp, the monochromator, a sample, and a detector. The overall system response is not flatover the entire spectral range. By adjusting the slit width at each wavelength increment during a scan, constant signal size can be
maintained. The same settings can then be used for reference or sample measurements.
In the above adjustment fashion the actual spectrometer bandpass is varied with the slit width since the grating dispersion changes
with the wavelength. In applications where constant bandpass is necessary, the slit width on SP monochromators can be adjusted via
computer control.

Dual Excitation Microfluorescence

Application & Selection Guide

The compact size and low price of SP’
s 1/8 meter monochromators enables them to be used in place of filters. The simple, internal
computer interface allows these monochromators to be much more than a fixed filter replacement.
For example, in a dual-excitation micro-fluorescence system, two xenon arc lamps direct light into two SP 1/8 metermonochromators. The exits are coupled through fast shutters into two halves of a bifurcated fiber bundle. The exit of the bundle
provides fast, tunable, dual-wavelength, epifluorescent illumination for a Zeiss microscope. By using SP's 1/8 meter monochromator,
the system has been made compact and computer controlled.

Time Domain Spectroscopy
Pulsed laser fluorescence spectroscopy is increasingly interesting because of the extra information that the time domain provides.
However, if a conventional monochromator is used to clean up the excitation beam or analyze the emission, the monochromator will
broaden the pulse by several hundred picoseconds.
Single monochromators introduce temporal dispersion in pulses. The optical paths using the left and right sides of the grating areunequal. SP’s double monochromators eliminate the temporal dispersion when used in their subtractive dispersion mode. The optical
path differences in the second monochromator entirely compensate for the path differences in the first. Zero temporal dispersion
results.

Portable Radiometry
Field measurements of lamps, reflection and transmission frequently require more range, accuracy and computer compatibility thana commercial colorimeter will provide. With SP’
s 1/8 meter monochromator and AD130 smart detector, or an SM spectrometer and anotebook computer, a research grade radiometer can be slipped into a briefcase. The briefcase would still have room for standards,
notes, and perhaps an AF series fiber optic probe and interface to make sampling easy. Both approaches make a complete computercompatible system in a very small package.

Detection Systems for Tunable Lasers
Tunable lasers such as Ti:sapphire and optical parametric lasers are finding more applications as excitation sources in laser
spectroscopy. SP scanning monochromators and array spectrometers are capable of synchronized detection in such experiments. In
one application a Digikrom monochromator was programmed to follow the wavelength scan of an OPO laser for detecting
fluorescence. In another setup with a Ti:sapphire laser tuning through a spectral range, an SM spectrometer was used to monitor thelaser radiation wavelength in a real time mode.

A Guide to Spectrometer Selection
The choice of a spectrometer must be guided by the application requirements. The parameters that delineate most applications arelisted below:
1. Is the needed output a single wavelength or a dispersed spectrum? Monochromators select single wavelengths, spectrographs
have dispersed spectral outputs.
2. Is high resolution (high dispersion) or low resolution (low dispersion) needed? The greater the resolution that is needed, the longer
the focal length of the monochromator should be. A spectrograph with greater resolution will necessarily have a smaller bandpass.
High resolution also dictates a narrow slit width in array spectrometers.
3. Does the spectrometer need to select a weak signal in a strong light background? If stray light rejection is important, then a double
monochromator may be necessary.

Spectral Products

127

Table 1. Selsction Chart by Applications
Application

Requirements

Recommended

Fluorescence in liquids(emission or excitation)

1 20nm bandwidth
Good stray light rejection

CM110 1/8 meter monochromator or SM
spectrometer for emission detection

Fluorescence in biological materials(emission or excitation)

1 20nm bandwidth
Excellent scattered light rejection

CM112 1/8 meter monochromator or SM
spectrometer with special filter

Fluorescence in solids(emission or excitation)

0.2 3.0nm bandwidth
Good stray light rejection

DK240 1/4 meter monochromator or
SM GT2 spectrometer for detection

Weak fluorescence in solids, liquids(emission)

Array detection for high sensitivity
0.2 3.0nm bandwidth

DKSP240 1/4 meter spectrogrsph witharray detection system

Weak fluorescence in scattering biomaterials(emission or excitation)

High stray light rejection
High sensitivity

DKSP240 1/4 meter monochromator

Phosphorescence, fluorescence kinetics(emission)

Array detection for time resolution

DKSP240 1/4 meter spectrograph witharray detection system

Fluorescence

Application

Requirements

Recommended

Spectrophotometry of clear liquids, optics

1 20nm bandwidths 0.1% transmission

Cm110 1/8 meter monochromator or
SM spectrometers

Spectrophotometry of gases,
traces in clear solids

To 0.01% transmission, 0.05 1.0nm bandwidth

DK240 1/4 meter monochromator

Spectrophotometry of dense objects

To 0.01% transmission, 1 20nm bandwidth

DK240 1/4 meter monochromatorTime varying spectrophotometry(thin film monitoring)

Array detection

DKSP240 1/4 meter spectrogrsph with array
detection system or SM spectrometers

Application

Requirements

Recommended

Picosecond studies liquids,
biological materials

Preserving pulse width 1 20nm bandwidths

CM110, CM112 monochromator

Picosecond studies solids, gases

Preserving pulse width 0.2 20nm bandwidths

DK240 1/4 meter monochromator

Tuning, wavelength checking, diode lasers

Resolution, accuracy to 1.0nm

CM110 1/8 meter monochromator

Tuning, wavelength checking,gas and dye lasers

Resolution, accuracy to 0.1nm

CM140 1/4 meter monochromator

Diode laser mode structure

Resolution to 1.0nm

CM110 1/8 meter monochromator

Spectrophotometry

Laser Spectrometrywww.spectralproducts.com

Application & Selection Guide

Table 1. (continued) Selsction Chart by Applications

128

Spectral Products

Table 1.(countinued) Selsction Chart by Applications
Application

Requirements

Recommended

Arc, spark, or plasma spectroscopy

Resolution to 0.03nm

DK480 1/2 meter monochromator

Arc, spark, or plasma spectroscopy ofsmall traces

Resolution to 0.03nm array capability

DK480 1/2 meter monochromatorand spectrographLEDs, incandescent lamps, fluorescentlamps, phosphors

1 20nm bandwidth

CM110 1/8 meter monochromatoror SM spectrometer

Raman spectrometry

0.3 10cm 1 bandwidth Excellent
stray light rejection

CM110 1/8 meter monochromator with special
filter, CM112 double monochromator

Application

Requirements

Recommended

Fiber analysis, LED analysis
source or detector

1 20nm bandwidths 200 2500nm tunability

CM110, DK240 monochromators or
multiple SM spectrometers

NIR spectrophotometry

1 20nm bandwidths 700 1100nm tunability

CM110, DK240 monochromators or
SM spectrometers

Application

Requirements

Recommended

Array capability 200 20000nm
tunability 0.3 30nm bandwidth

CM110, DK240 monochromators andspectrographs or SM spectrometers

Emission Spectrometry, Radiometry

Application & Selection Guide

Infrared Spectrometry

General purpose
Teaching, general lab use

Notes
Biological samples frequently scatter almost 100% of theincident light. To detect a weak fluorescence signal in thisenvironment requires a double monochromator, frequently on
both the excitation and emission sides.
Array detection can potentially multiply the signal collected by
the number of detector elements, N. The signal to noise ratio
potentially improves by the square root of N.

wavelength octave, typically 350nm to 700nm. Outside of thisregion, the aberrations are much worse than those in a planegrating instrument are. A typical Czerny-Turner monochromatorwith a 1200 groove-per-millimeter plane grating will have a goodresolution from 250nm to 1500nm, over three times the
wavelength range of itsconcave grating counterpart. The planegrating spectrometer offers superior resolution in the UV and IR.
Concave-grating instrument designs are generally good for one
spectral region only. Changing gratings is not possible. Plane-

Plane and Holographic Gratings
In recent years spectrometers using corrected concave
holographic gratings have been heavily promoted. The
advantages of these instruments are compactness, few opticalelements and aberration correction that improve resolution.
Why has the plane-grating spectrometer survived? For the UV,
for the IR, for wide spectral ranges, and for radiometry in which
absolute intensity of a signal is important, the plane-grating
spectrometer is superior.
Corrected concave-gratings offer good resolution over a

grating spectrometers can change their spectral region bychanging gratings. A Czerny-Turner spectrometer with a triple
grating turret can span 200 to 2000nm with good resolution andgood efficiency.
Concave-grating spectrometers have transmission efficiencies
that vary greatly with the input angle. This makes them poor
choices for radiometric studies in which the intensity at eachwavelength is critical and uniform illumination of the grating
cannot be guaranteed. Because the groove profiles of correctedconcave gratings vary greatly across the grating surface, thediffraction efficiency also varies greatly across the surface.

Spectral ProductsThis contrasts with the plane-grating which has the same129

remain the workhorses.

efficiency at all points on the surface. Unless the light enters aconcavegrating instrument in exactly the same distribution each

Gratings and Their Selections

time, the instrument will have varying transmission efficiency.

From the foregoing discussion on grating equation it is clear

Fifty-percent changes from central illumination to edgethat the longest wavelength that will be diffracted by a grating is

illumination have been measured.

2*d. This places a long wavelength limit on the spectral range ofCorrected concave-gratings average half the diffraction

a grating. The table below illustrates this limit. Loss of light as theefficiencies of plane-gratings.The groove profile of a ruled-planegrating is rotated to a steep angle usually limits the actual range

grating is designed for high efficiency within narrow limits. Ion

to about 90% of the long wavelength limit listed.

etching has been used to sharpen the groove profiles of

The wavelength dependence of grating efficiency also

corrected concave-gratings, but this is akin to making a lens fromconstrains the spectral range. SP has a complete set ofa glass plate by sandblasting. The profile improves, but thediffraction efficiency curves for all of its standard and custom

surface and scatter are horrible.

gratings, and the appropriate curves should be reviewed if

While corrected-concave-grating spectrometers occupy anspectral range is important.

important niche in spectroscopy, plane-grating instruments

Grating Density (g/mm)

Groove spacing (nm)3600

277.78555.562400

416.67833.331800

555.56

1,111.11

1200

833.33

1,666.67600

1,666.67

3,333.33

300

3,333.33

6,666.67

150

6,666.67

13,333.33

75

13,333.33

26,666.66

50

20,000.00

40,000.00

Selection by Required Bandwidth or
Dispersion
A table giving typical reciprocal linear dispersions near thecenter of the spectral range is given below.
The bandwidth transmitted by a monochromator will be thedispersion times the slit width. Given two of the three variablesbandpass, slit width and dispersion-the third can be calculated.
Most applications are light starved, and it is useful to open theslits to the greatest width that is compatible with the desired
bandwidth. To increase the slit width while retaining the
bandwidth, one can select a higher groove density. For example,
at 340nm and a 10nm bandwidth in a 1/8 meter monochromator,
a 1200 g/mm grating will allow a 1.4nm slit width, but a 2400
g/mm grating will allow a 2.8 millimeter slit width at the same
bandpass.
Occasionally, the bandwidth may be constrained by the
maximum slit width. A typical 1/4 meter monochromator might
have a maximum slit width of four millimeters; a 14 nanometerbandpass would result with a 1200 g/mm grating. If a 28nm
bandwidth was desired, a 600 g/mm grating would give therequired bandpass.

Long wavelength Limit (nm)For spectrographs, a particular dispersion is frequently desired.
To cover 400 to 700 nanometers on a 25mm array detector
would require a dispersion of 12nm/mm. The grating suitable forthis dispersion for an SM2XX spectrometer would be a 1200
g/mm.
A particular resolution might also be required in a
spectrograph. To resolve 0.3 angstroms in three pixels (75microns) would require a dispersion of:(.03/. 075)

1.3nm/mm.

This dispersion would be typical of an 1800 g/mm grating in a
1/2 meter spectrograph.

Selection by Required Throughput
One frequently needs to obtain the maximum grating efficiency
for a particular wavelength band. It would be useful to be able todesign a groove profile to provide that efficiency profile.
Unfortunately, this problem has not yet been solved. In practice,
the efficiencies of many gratings have been measured; one
selects from the grating with the desired efficiency curve.
For ruled gratings and blazed holographic grating theefficiencyprofile is generally triangular. The grating is most efficientwww.spectralproducts.com

Application & Selection Guide

Table 2. Grating Density and Long Wavelength Limit

130

Spectral Products

Selection by Stray Light Levelat a blaze wavelength, λb While a number of blaze wavelengths
are generally available, the most common is 1/3 of the long

Both scatter and extraneous spectral features (ghosts) may

wavelength limit. (For a 1200g/mm grating, this would be at 500

result from grating imperfections (see Stray Light discussion in

nanometers.) The peak at λb usually 90%, and the efficiency falls

Spectrometer Basics section). These imperfections result fromto about 20% at 67 *λb and at 1.5 *λb

the grating manufacturing processes. In general there are five

Holographic gratings generally have flat efficiency profiles. The

types of gratings available; interferometrically ruled, ruled,mean efficiency is about 30% over a range of .33 *λb to 1.5 * λb.

holographic, sheridan blazed holographic and ion-etched

In both cases, real efficiencies show complicated polarization

holographic.

dependence. The ratio of efficiency for polarization parallel to theInterferometrically ruled gratings, holographic gratings andgroove to that perpendicular to the grooves may be 3:1 over a

sheridan blazed gratings have comparable levels of stray light. Alllarge spectral range.

three are generally free of ghosts.

Application & Selection Guide

In Figure 19, typical efficiency curves for a standard SP grating

Exposing photoresist with a laser generated interference

are presented. These curves span a wide range of wavelengths

pattern makes the holographic gratings. The interference

from UV to IR. These curves do not account for loss of solid

sinusoidaSheridan blazed gratings are produced by exposing theangle of the grating as it is rotated. In addition to the curves

photoresist from both sides. A triangular profile results; theseincluded here, SP has measured efficiencies for both polarizedgratings have good efficiency. However, the technique will only

and unpolarized light on a wide variety of other gratings; this data

produce UV blazed gratings. In ruling gratings, a pointed

is available upon request.

diamond is used to burnish the groove profile into a gold film on aquartz substrate. The position of the diamond is controlled by aninterferometer as each groove is cut.
Classical ruled gratings are ruled without interferometriccontrol. These gratings tend to have small, periodic errors in theirgroove profile.
SP's standard gratings are listed in Appendix A. Standard
DK24 series gratings are 68mm x 68mm. Wide gratings (64mm x84mm) are available. SP's standard DK12 series gratings are
30mm x 30mm. For gratings not listed consultSP.
Recommended applications are listed at right for ruled
diffraction gratings using spectral range, bandwidth, throughput
and stray light selection criteria discussed above,

Figure 19. Typical grating efficency curves.

Selection by Application
Table 4. Selection of Gratings by Applications
Application

Grating g/mm

Grating Blaze
Wavelength (nm)DK

CM

Fouorescent illumination

2400

240

x

x

Highest UV through put

Fluorescent detection

1200

500

x

x

Effcient over emission range

x

x

SM

Rearks

NIR laser analysis

600

1000

NIR laser analysis

1200

1000

Raman

1800

500 holographicxx

Fair effciency, good stray light performance

NIR Raman

600

1100

x

x

Good effciency, good stray light performancexx

UV VIS Array

300

300

UV VIS Array

1200

250

VIS Array

300

500

VIS Array

600 1200

550

Effcient over emission rangexGood effciency, good UV and part of visiblexx

Effcient over emission rangexGood effciency, good UV and part of visible
Good effciency, covers entire visible regionxGood effciency, covers entire visible region

Section X : Appendix

Appendix A - Standard Gratings
1/8 Meter CM Instruments
1/4 and 1/2 Meter DK Instruments
SM Spectrometers
Grating Efficiency Curves
Purchasing, Quality Guaranteed132

Spectral ProductsStandard Gratings
Standard Ruled Gratings for
CM 1/8 Meter Instruments (including SM300, AD300, and SM302)
Table 1. Standard Gratings for CM monochromators / spectrographs

Appendix

Part Number

Density (g/mm)

Peak I (nm)Range (nm) @ > 30%T

Peak T%

AG2400-00240-303

2400

240

180-68070

AG1200-00200-303

1200

200

180-45065

AG1200-00300-303

1200

300

200-75072

AG1200-00500-303

1200

500

330-1000

83

AG1200-00600-303

1200

600

400-1500

80

AG1200-00750-303

1200

750

480-150085

AG0600-00500-303

600

500

350-130080

AG0600-01250-303

600

1200

800-3000

85

AG0300-00500-303

300

500

310-110080

AG0300-02500-303

300

2500

1500-6000

88

AG0150-00500-303

150

500

320-98072

AG0150-04000-303

150

4000

2500-9000

93

AG0075-01700-303

75

1700

1100-2800

85

AG0075-08000-303

75

8000

5000-15000

82AG0045-01750-303

45

1750

1100-3000

78

Spectral Products

133Standard Ruled Gratings for
DK 1/4 & 1/2 Meter Instruments
Table 2. Standard Gratings for DK monochromators / spectrographs
Density (g/mm)

Peak I (nm)Range (nm) @ > 30T%

Peak T%

AG2400-00240-686

2400

240

180-68070

AG1200-00200-686

1200

200

180-45065

AG1200-00250-686

1200

250

180-460

70

AG1200-00300-686

1200

300

200-75072

AG1200-00500-686

1200

500

330-1000

83

AG1200-00600-686

1200

600

400-1500

80

AG1200-00750-686

1200

750

480-1500

85

AG1200-01000-686

1200

1000

550-150075

AG0600-00500-686

600

500

350-130080

AG0600-01200-68

600

1250

800-3000

85

AG0600-01600-686

600

1600

950-3000

93

AG0300-00500-686

300

500

310-110080

AG0300-02000-686

300

2000

1200-4000

88

AG0300-02500-686

300

2500

1500-6000

88

AG0300-03000-686

300

3000

1800-6000

80

AG0150-00500-686

150

500

320-98072

AG150-04000-686

150

4000

2500-9000

93

AG0075-08000-686

75

8000

5000-15000

82

AG0050-00600-686

50

600

400-120078AG0050-1200-686

50

12000

7500-20000

82

www.spectralproducts.com

Appendix

Part Number

134

Spectral ProductsStandard Ruled Gratings for
SM Spectrometers
Table 3. Standard Gratings for SM spectrometers

Appendix

Part Number

Density (g/mm)

Peak I (nm)Range (nm) @ > 30T%

Peak T%

AG0600-00300-163

600

300

200-65071

AG0600-00400-163

600

400

250-1000

77

AG0600-00500-163

600

500

300-110077

AG0600-00750-163

600

750

500-170072

AG0600-01000-163

600

1000

600-3000

74

AG0600-01200-163

600

1200

800-320076

AG0600-01600-163

600

1600

950-320087

AG0830-00800-163

830

800

450-2350

76

AG0830-01200-163

830

1200

600-2350

75

AG1200-00250-163

1200

250

200-650

69

AG1200-00300-163

1200

300

200-70070

AG1200-00400-163

1200

400

200-900

71

AG1200-00500-163

1200

500

300-1650

71

AG1200-00750-163

1200

750

460-1650

71

AG1200-01000-163

1200

1000

520-1650

69

AG1800-00500-163

1800

500

300-1075

67

References
M.V.R.K. Murty, Theory and Principles of Monochromators, Spectrometers, and Spectrographs, Optical Engineering,
Vol.13, No.1, Jan 1974
T.M. Niemczyk and G.W. Gobeli, Characteristics of a Direct Grating Drive, Applied Spectroscopy, Vol. 42, No. 5, 1988

Spectral Products

135

Grating Efficiency Curves
AG1200-01000...................................................................... 132
AG1200-00750...................................................................... 132
AG1200-00500...................................................................... 132
AG1200-00400...................................................................... 132
AG1200-00300...................................................................... 132
AG1200-00250...................................................................... 132
AG0830-01200...................................................................... 133
AG0830-00800...................................................................... 133
AG0600-01600...................................................................... 133
AG0600-01250...................................................................... 133
AG0600-01000...................................................................... 133
AG0600-00500...................................................................... 133
AG0600-00400...................................................................... 133
AG0600-00300...................................................................... 134
AG0300-04000...................................................................... 134
AG0300-02000...................................................................... 134
AG0300-00750...................................................................... 134
AG0300-00500...................................................................... 134
AG0300-00300...................................................................... 134
AG0150-00500...................................................................... 134
AG0120-12000.................................................................... 134
AG1200-U (Holographic) ...................................................... 135
AG1200-V (Holographic) ...................................................... 135
AG1800-U (Holographic) ......................................................135
AG1800-V (Holographic) ...................................................... 135
AG2400-U (Holographic) ...................................................... 135
AG2400-V (Holographic) ...................................................... 135
AG3600-U (Holographic) ...................................................... 135

www.spectralproducts.com

Appendix

AG0600-00750...................................................................... 133

136

Spectral Products

Grating Efficiency Curves

AppendixSpectral Products

137

Appendixwww.spectralproducts.com

138

Spectral Products

AppendixSpectral Products

139

Appendixwww.spectralproducts.com

140

Spectral ProductsWorking with SP Spectral Products

Warranty
All catalog products are guaranteed to meet SP’s published

SP sales and technical staff will be glad to provide productspecifications and to be free of defects in materials andpricing and application information. For a quick response andworkmanship as defined in the specifications for one year after

assistance please contact SP Spectral Products.

delivery. The buyer’s exclusive remedy and the limit of SP’sPurchase Orders

liability for any loss whatsoever shall not exceed the purchase

Place orders by phone, mail, e-mail or fax. Hard copies of theprice paid by the buyer for the goods to which a claim is made.

custom purchase order may be required. To minimize errors,

SP does not give any implied warranties of merchantability or ofplease provide the SP part number, description, purchase order

fitness for a particular purpose in connection with the sale of any

number, ship-to and bill-to address and shipping method desired.

SP products.

Payment Methods

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Open Accounts: For business, government agencies,

A Return Material Authorization number (RMA) is required foruniversities and colleges an open account with approved credit

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Credit Cards: Orders placed with MasterCard or VISA cardan RMA. This includes the original purchase order number, date

may be accepted. Please provide the information of accountof shipment and serial number. All the returns should be shipped

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with the original packaging materials and bear the assigned RMA

Appendix

Delivery (COD): Orders may be shipped via UPS or Federal

number(s). A restocking fee may be charged for all returned

Express on a COD basis. Cash, a money order or a bank or

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days. The repaired or replaced product(s) will be returned to you

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All quotations written or verbal are valid for 30 days from theprior to shipment, your sales representative will determine thedate of quotation unless stated otherwise. Prices are based on

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may not be returned.

DeliveryRush orders placed by phone (for items in stock at time ofPricesorder) will be shipped within 2 working days. Most other standard

Prices for catalog stock items are shown in the current priceitems can be shipped within 2 weeks. Delivery times for special

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Quantity Discounts
Contact our Sales department for quantity or educational
discounts.

Section XI : Optics

Basic Substrates

Polarization Optics

Windows

Waveplates

Precision Flat Mirrors

Polarizers

Right Angle Prisms

Polarizing Plate Beamsplitters

Laser Mirrors

Polarizing Cube BeamsplittersStandard Laser Mirrors

Broadband Polarizing Cube Beamsplitters

Laser Mirrors for Dual Wavelengths
Right Angle Prism Mirrors
Broadband Dielectric Mirrors
Exotic Mirrors
Beam Splitters
Plate Beamsplitters
Super Thin Plate Beamsplitters
High Energy Harmonic Beamsplitters
Dichroic Plate Beamsplitters
Cube Beamsplitters
TrueSplit
Variable Beam Splitter/Attenuator

142

Spectral Products

Basic Substrates(for Laser Optics) Spectral Optics produces a full line of standard size laser optics
covering all common applications. The most important basic and fundamental
substrates for the laser optics are windows for plate polarizing or dichroic beam
splitters, precision flat mirror substrates for most of the laser mirrors, and the rightangle prisms used for cube polarizing beam splitters.
Please check up each web page for the detailed specification.

Windows
Clear Aperture: larger than central 85% of diameter
Surface Quality: 10-5 Scratch-Dig
Surface Flatness: /10 @633nm over clear aperture
Diameter tolerance: +0.000/-0.010" (+0.00/-0.25mm)
Thickness tolerance:

0.010" (0.25mm)OpticsBevel: <0.5mm @45° typical
Wedge:

5 arc min,10 arc sec, 30

5 arc minSpectral Optics provides high precision laser-quality regular plane (wedged (30

5 arc min), extremely parallel plane (10 arc sec), and5 arc min) windows fabricated from UV fused silica or BK7. These windows are polished on both sides with highflatness and high surface quality to handle high power laser applications as well as various industrial applications.

They can be used as laser windows with a proper anti-reflection coating and can become various coated products, such as,
plate beam splitters, dichroic filters, and partial reflectors.

Spectral Products

143

Product Lists
Windows
Diameter(D)Thickness(T)Meterial
Fused silica

0.5" (12.7mm)

1/4" (6.35mm)
BK7Part Number

5 arc min10 arc sec
30 5 arc min
5 arc min10 arc sec
30 5 arc min

PW1 0525 FS
PW2 0525 FS
PW3 0525 FS
PW1 0525 BK
PW2 0525 BK
PW3 0525 BK
PW1 1025 FS
PW1 1037 FS
PW2 1025 FS
PW2 1037 FS
PW3 1025 FS
PW3 1037 FS
PW1 1025 BK
PW1 1037 BK
PW2 1025 BK
PW2 1037 BK
PW3 1025 BK
PW3 1037 BK
PW1 1525 FS
PW1 1537 FS
PW2 1525 FS
PW2 1537 FS
PW3 1525 FS
PW3 1537 FS
PW1 1525 BK
PW1 1537 BK
PW2 1525 BK
PW2 1537 BK
PW3 1525 BK
PW3 1537 BK
PW1 2025 FS
PW1 2037 FS
PW2 2025 FS
PW2 2037 FS
PW3 2025 FS
PW3 2037 FS
PW1 2025 BK
PW1 2037 BK
PW2 2025 BK
PW2 2037 BK
PW3 2025 BK
PW3 2037 BK
PW1 3050 FS
PW2 3050 FS
PW3 3050 FS
PW1 3050 BK
PW2 3050 BK
PW3 3050 BK
PW1 4050 FS
PW2 4050 FS
PW3 4050 FS
PW1 4050 BK
PW2 4050 BK
PW3 4050 BK

5 arc minFused silica

1.0" (25.4mm)

10 arc sec
30 5 arc min

1/4" (6.35mm)
or 3/8" (9.53mm)

5 arc min

BK7

10 arc sec
30 5 arc min
5 arc minFused silica

1.5" (38.1mm)

10 arc sec
30 5 arc min

1/4" (6.35mm)
or 3/8" (9.53mm)

5 arc min

BK7

10 arc sec
30 5 arc min
5 arc minFused silica

2.0" (50.8mm)

10 arc sec
30 5 arc min

1/4" (6.35mm)
or 3/8" (9.53mm)

5 arc min

BK7

10 arc sec
30 5 arc min

Fused silica
3.0" (72.6mm)

1/2" (12.7mm)
BK7

Fused silica
4.0" (101.6mm)

1/2" (12.7mm)
BK7

5 arc min10 arc sec
30 5 arc min
5 arc min10 arc sec
30 5 arc min
5 arc min10 arc sec
30 5 arc min
5 arc min10 arc sec
30 5 arc min

OpticsWedge( )NOTE:
1. Usually 0.5-2.0" diameter substrates are in stock. Please check up the delivery for the larger substrates with us. It usually takes ~3-5 weeks
if we don't have any in stock.
2. Some other sizes and/or thicknesses may be available. Please contact us for other custom size windows.
3. Spectral Optics provides anti-reflection coating services on these windows. Please refer to our coating services, V-coating and Broadband anti-reflection
coating for the details. The price of the anti-reflection coating is $45.00 per each surface for our standard substrate sizes and wavelengths.
4. A custom substrate will need the fixture machining charge (~$200-300). The coating lot charge (~$400-500 per each lot) will be applied fora special wavelength.

www.spectraloptics.com

144

Spectral Products

Precision Flat Millors
Material : UV fused silica, BK7
Clear Aperture : larger than central 85% of diameter
1st Surface : λ/10 @633nm over clear aperture, 10-5 Scratch-Dig
2nd Surface : Commercial polish
Diameter tolerance : +0.000/-0.010" (+0.00/-0.25mm)
Thickness tolerance : ±0.010" (±0.25mm)
Wedge : ≤5 arc min
Bevel : <0.5mm @45°typical
Spectral Optics provides precision flat mirrors are designed to be used as dielectric laser mirrors or metal coated mirrors. These are an excellent
choice for optical path folding applications, various imaging systems, and laser applications.

Product Lists
Windows

OpticsDiameter(D)Thickness(T)0.5" (12.7mm)

1/4" (6.35mm)

0.75" (19.1mm)

1/4" (6.35mm)

1.0" (25.4mm)

1/4" (6.35mm)
or 3/8" (9.53mm)

1.5" (38.1mm)

2.0" (50.8mm)

1/4" (6.35mm)
or 3/8" (9.53mm)

1/4" (6.35mm)
or 3/8" (9.53mm)

3.0" (76.2mm)

1/2" (12.7mm)

4.0" (101.6mm)

1/2" (12.7)

Meterial
Fused silica
BK7
Fused silica
BK7
Fused silica
BK7
Fused silica
BK7
Fused silica
BK7
Fused silica
BK7
Fused silica
BK7

Part Number
PM0525 FS
PM0525 BK
PM0725 FS
PM0725 BK
PM1025 FS
PM1037 FS
PM1025 BK
PM1037 BK
PM1525 FS
PM1537 FS
PM1525 BK
PM1537 BK
PM2025 FS
PM2037 FS
PM2025 BK
PM2037 BK
PM3050 FS
PM3050 BK
PM4050 FS
PM4050 BK

NOTE:
1. Usually 0.5-2.0" diameter substrates are in stock. Please check up the delivery for the larger substrates with us. It usually takes ~3-5
weeks if we don't have any in stock.
2. Some other sizes and/or thicknesses may be available. Please contact us for other custom size windows.
3. Please refer to the coating service section for the detailed coating specs available.

Spectral Products

145

Right Angle Prisms
Material : UV fused silica, BK7
Clear Aperture : larger than 85%
Surface Quality (Scratch-Dig) : 10-5 for UV fused silica, 20-10 for BK7
Surface Flatness : λ/10 for UV fused silica, λ/8 for BK7 @633nm
Angular Deviation : ±3 arc min
Bevel : <0.5mm @45°typical

Right angle prisms (RAP) are widely used for rotating image and redirecting the input light. They are the main components for polarizing
and non-polarizing cube beamsplitters.
The total internal reflection (TIR) in the right angle prisms with specific anti-reflection (AR) coatings on the two leg sides make themselves
the perfect alternatives of 45 degree mirrors. Please refer to our right angle prism mirror for the details.

Optics

Product Lists
Windows
Diameter(D)0.5" (12.7mm)
1.0" (25.4mm)

Meterial
Fused silica
BK7
Fused silica
BK7

Meterial
λ/10, 10 5
> λ/10, 10 5
λ/10, 10 5
> λ/10, 10 5Part Number
RAP 050 FS
RAP 050 BK
RAP 100 FS
RAP 100 BK

NOTE:
1. Some other sizes may be available. Please contact us for other custom size RAP.
2. Spectral Optics provides various coating services. Please contact us and check up the availability for any coating if needed.

www.spectraloptics.com

146

Spectral Products

Laser Mirrors
Spectral Optics provide high-quality dielectric coated laser mirrors for use with high power/energy and or ultra-fastlasers from UV to IR spectral ranges. Most dielectric coated laser mirrors that Spectral Optics provide guarantee thestate of art damage threshold and the maximum reflectance available.
Standard Laser Mirrors cover the most popular wavelengths being used in various laser applications, including highenergy eximer lasers, high energy gas lasers, high power ND :YAG lasers, high performance diode lasers, andultrafast Ti :Sapphire lasers.
Some invisible laser applications require a tracer for aligning optics in the setup. Also some Nd : YAG laser
applications need to reflect a dual wavelengths together. The laser mirrors for dual wavelengths are perfect solutions
for these requirements.
In case of some 45°mirrors, especially for deep UV applications, the dielectric coating material begins to absorb and reduce the reflectance. In theseapplications, the right angle prism mirrors are perfect alternative solutions to replace the regular plate mirrors. They're using total internal reflection so
there's no worry about losing a power. And the anti-reflection coatings are using only a couple coating layers and can minimize the absorption.
The broadband dielectric mirrors are the best solution to maximize the reflection for a certain range that regular metal coating can't achieve.
Some special applications need unusual requirements to pick out a specific harmonic or spoil a parasitic laser line. Spectral Optics can find a coating
configuration and provide exotic mirrors that will solve the problems.

Standard Laser Mirrors
OpticsSubstrate Material: UV fused silica for <400nm, BK7 for

400nm

Clear Aperture: larger than central 85% of diameter
1st Surface: λ/10 @633nm before coating, 10-5 Scratch-Dig
2nd Surface: Commercial polish
Diameter tolerance: +0.000/-0.010" (+0.00/-0.25mm)
Thickness tolerance:

0.010" (-0.25mm)

Bevel: <0.5mm @45° typical
Wedge:

5 arc minCoating technology: e-beam multilayer dielectric
Damage threshold: 20J/cm2, 20ns, 20Hz @1064nm or 10MW/cm2 @1064nm

Laser mirrors are available with reflectivities >99.5% for visible and NIR wavelengths. Common laser wavelengths are standard, including YAG, HeNe,
Argon and diode lasers. The mirrors are suitable for either beam steering or intra-cavity applications.
For wavelengths shorter than 355nm, Spectral Optics has developed a series of mirrors in which the coating design, coating material suite and substratecomposition are carefully matched to provide the optimum combination of high reflectivity, low absorption and high damage threshold at each particular
wavelength. For the best match to your application, consult a Spectral Products applications specialist. Be sure to discuss the required peak power, pulse
duration and repetition rate, as well as the expected intensity distribution across the component optical aperture. Reflectivities of >99.5% can be realized
for wavelengths of 248 nm and longer, while a minimum reflectance of >97% is offered below.

Spectral Products

147

Product Lists
R (%)
(nm)

D.T.

0

45

Size

Windows
2

ND:YAG Laser Line Mirrors, D.T: (J/cm @10ns)

266

355

3

5

>99.5

>99.5

>99.0

>99.0

0.5" (12.7mm)

PM 0525 FS 266 0

1.0" (25.4mm)

PM 1037 FS 266 0
PM 1037 FS 266 45

2.0" (50.8mm)

PM 2037 FS 266 0
PM 2037 FS 266 45

0.5" (12.7mm)

PM 0525 BK 355 0

1.0" (25.4mm)

PM 1037 BK 355 0
PM 1037 BK 355 45

2.0" (50.8mm)
0.5" (12.7mm)
532

10

>99.5

>99.0

1.0" (25.4mm)

PM 1037 BK 532 0
PM 1037 BK 532 45

2.0" (50.8mm)

PM 2037 BK 532 0
PM 2037 BK 532 45

0.5" (12.7mm)
1064

10

>99.5

>99.0

PM 2037 BK 355 0
PM 2037 BK 355 45
PM 0525 BK 532 0

1.0" (25.4mm)
2.0" (50.8mm)

PM 0525 BK 1064 0
PM 1037 BK 1064 0
PM 1037 BK 1064 45

OpticsPM 2037 BK 1064 0
PM 2037 BK 1064 45

ND:YAG Laser Scanning Mirrors, 30-50°, D.T: (J/cm2 @10ns)
YSM 0525 BK 532
YSM 0525 FS 532
YSM 1037 BK 532
1.0" (25.4mm)>99.5 for R
YSM 1037 FS 532
YSM 2037 BK 532
2.0" (50.8mm)
YSM 2037 FS 532
YSM 0525 BK 1064
0.5" (12.7mm)
YSM 0525 FS 1064
YSM 1037 BK 1064
1.0" (25.4mm)>99.5 for R
YSM 1037 FS 1064
YSM 2037 BK 1064
2.0" (50.8mm)
YSM 2037 FS 1064
Ultrafast (Femtosecond) Ti:Sapphire Laser Mirrors, D.T: (J/cm2 @300psec, 20Hz)
FPM 0525 BK 800 00.5" (12.7mm)
0.5" (12.7mm)

532

10

1064

10

800

8

>99.5

>99.0

1.0" (25.4mm)

FPM 1037 BK 800 0
FPM 1037 BK 800 45

2.0" (50.8mm)

FPM 2037 BK 800 0
FPM 2037 BK 800 45

High Energy Eximer Laser Mirrors, D.T: (J/cm2 @10ns)

248

1.5

=0

>99.0

0.5" (12.7mm)

PM 0525 FS 248 0

1.0" (25.4mm)

PM 1037 FS 248 0
PM 1037 FS 248 45

2.0" (50.8mm)
0.5" (12.7mm)
308

351

5

5

>99.5

>99.5

>99.0

>99.0

PM 2037 FS 248 0
PM 2037 FS 248 45
PM 0525 FS 308 0

1.0" (25.4mm)

PM 1037 FS 308 0
PM 1037 FS 308 45

2.0" (50.8mm)

PM 2037 FS 308 0
PM 2037 FS 308 45

0.5" (12.7mm)

PM 0525 BK 351 0

1.0" (25.4mm)

PM 1037 BK 351 0
PM 1037 BK 351 45

2.0" (50.8mm)

PM 2037 BK 351 0
PM 2037 BK 351 45

www.spectraloptics.com

148

Spectral Products

Product Lists
R (%)
(nm)

D.T.

0

45

Size

Windows
2

High Energy Gas Laser Mirrors, D.T.: (MW/cm cw)
0.5" (12.7mm)
244 257

1

>99.5

>99.0

1.0" (25.4mm)
2.0" (50.8mm)
0.5" (12.7mm)

300 308

1

>99.5

>99.0

1.0" (25.4mm)
2.0" (50.8mm)
0.5" (12.7mm)

325

1

>99.5

>99.0

1.0" (25.4mm)
2.0" (50.8mm)
0.5" (12.7mm)
1.0" (25.4mm)

337

1

>99.5

>99.0
2.0" (50.8mm)

Optics0.5" (12.7mm)
351 364

1

>99.5

>99.0

1.0" (25.4mm)
2.0" (50.8mm)
0.5" (12.7mm)

442

1

>99.5

>99.0

1.0" (25.4mm)
2.0" (50.8mm)
0.5" (12.7mm)
1.0" (25.4mm)

458 528

1

>99.5

>99.0
2.0" (50.8mm)
0.5" (12.7mm)

633

1

>99.5

>99.0

1.0" (25.4mm)
2.0" (50.8mm)
0.5" (12.7mm)

1315

1

>99.5

>99.0

1.0" (25.4mm)
2.0" (50.8mm)

PM 0525 FS 250 0
PM 1037 FS 250 0
PM 1037 FS 250 45
PM 2037 FS 250 0
PM 2037 FS 250 45
PM 0525 FS 305 0
PM 1037 FS 305 0
PM 1037 FS 305 45
PM 2037 FS 305 0
PM 2037 FS 305 45
PM 0525 FS 325 0
PM 1037 FS 325 0
PM 1037 FS 325 45
PM 2037 FS 325 0
PM 2037 FS 325 45
PM 0525 FS 337 0
PM 1037 FS 337 0
PM 1037 FS 337 45
PM 2037 FS 337 0
PM 2037 FS 337 45
PM 0525 BK 360 0
PM 1037 BK 360 0
PM 1037 BK 360 45
PM 2037 BK 360 0
PM 2037 BK 360 45
PM 0525 BK 442 0
PM 1037 BK 442 0
PM 1037 BK 442 45
PM 2037 BK 442 0
PM 2037 BK 442 45
PM 0525 BK 490 0
PM 1037 BK 490 0
PM 1037 BK 490 45
PM 2037 BK 490 0
PM 2037 BK 490 45
PM 0525 BK 633 0
PM 1037 BK 633 0
PM 1037 BK 633 45
PM 2037 BK 633 0
PM 2037 BK 633 45
PM 0525 BK 1315 0
PM 1037 BK 1315 0
PM 1037 BK 1315 45
PM 2037 BK 1315 0
PM 2037 BK 1315 45

High Performance Laser Diode Mirrors, D.T.: (MW/cm2 cw)
0.5" (12.7mm)
405

1

>99.5

>99.0

1.0" (25.4mm)
2.0" (50.8mm)
0.5" (12.7mm)

635 / 670

1

>99.5

>99.0

1.0" (25.4mm)
2.0" (50.8mm)

PM 0525 BK 405 0
PM 1037 BK 405 0
PM 1037 BK 405 45
PM 2037 BK 405 0
PM 2037 BK 405 45
PM 0525 BK 670 0
PM 1037 BK 670 0
PM 1037 BK 670 45
PM 2037 BK 670 0
PM 2037 BK 670 45

Spectral Products

149

Product Lists
(nm)

785

R (%)

D.T.
0

1

>99.5

45

>99.0

Windows

0.5" (12.7mm)

PM 0525 BK 785 0
PM 1037 BK 785 0
PM 1037 BK 785 45
PM 2037 BK 785 0
PM 2037 BK 785 45
PM 0525 BK 880 0
PM 1037 BK 880 0
PM 1037 BK 880 45
PM 2037 BK 880 0
PM 2037 BK 880 45
PM 0525 BK 980 0
PM 1037 BK 980 0
PM 1037 BK 980 45
PM 2037 BK 980 0
PM 2037 BK 980 45
PM 0525 BK 1480 0
PM 1037 BK 1480 0
PM 1037 BK 1480 45
PM 2037 BK 1480 0
PM 2037 BK 1480 45
PM 0525 BK 1550 0
PM 1037 BK 1550 0
PM 1037 BK 1550 45
PM 2037 BK 1550 0
PM 2037 BK 1550 45

1.0" (25.4mm)
2.0" (50.8mm)
0.5" (12.7mm)

880

1

>99.5

>99.0

1.0" (25.4mm)
2.0" (50.8mm)
0.5" (12.7mm)

980

1

>99.5

>99.0

1.0" (25.4mm)
2.0" (50.8mm)
0.5" (12.7mm)

1480

1

>99.5

>99.0

1.0" (25.4mm)
2.0" (50.8mm)
0.5" (12.7mm)

1550

1

>99.5

>99.0

1.0" (25.4mm)
2.0" (50.8mm)

OpticsSize

NOTE:
1. Other sizes and/or thicknesses are also available. Please contact us for checking up the availability for a different size/thickness.
2. Any other wavelength can be supplied on request.

www.spectraloptics.com

150

Spectral Products

Laser Mirrors for Dual Wavelengths
Substrate Material : UV fused silica for <400nm, BK7 for

400nm

Clear Aperture: larger than central 85% of diameter
1st Surface: λ/10 @633nm before coating, 10-5 Scratch-Dig
2nd Surface: Commercial polish
Diameter tolerance: +0.000/-0.010" (+0.00/-0.25mm)
Thickness tolerance:

0.010" (-0.25mm)

Bevel: <0.5mm @45° typical
Wedge:

5 arc minCoating technology: e-beam multilayer dielectric
Reflection :Dual YAG wavelengths Laser Mirror: R>99.0% for both 532/1064nm
Laser Mirror with Tracer: R>99.0% for Laser wavelength, R>80.0% for Tracer
Damage threshold: 20J/cm2, 20ns, 20Hz; 10MW/cm2 , CW @1064nm
Spectral Optics offers hybrid laser mirrors that provide high reflectivity and durability at both Nd:YAG
and doubled YAG wavelengths at either 0° or 45° and also afford the convenience of systemalignment using using visible wavelength tracer lasers.
The dual wavelengths (1064nm & 532nm) YAG laser mirrors give R>99.0% at both wavelengths.
Tracer laser options for either 633 nm HeNe and 670 nm diode laser wavelengths can be provided.
Optics

Reflectivity is > 99.0% at the laser wavelength and >80.0% at the tracer wavelength. Damage
threshold considerations for visible and near-IR wavelengths are similar to standard mirrors. For
high-power applications in the UV, consult a Spectral Optics engineer to determine the best solution.

STANDARD COMBINATIONS with Tracer
Laser Wavelength (nm)Tracer Wavelength (nm)248, 266, 308, 355, 1064

633, 670

Product Code:
1. Dual YAG wavelengths(nm)

AOI(°)
01064 / 532
45

Size CodePart Number

1.0" X 1/4"
1.5" X 3/8"
2.0" X 3/8"
1.0" X 1/4"
1.5" X 3/8"
2.0" X 3/8"

LMDW 1064 532 0 100 BKLMDW 1064 532 0 150 BKLMDW 1064 532 0 200 BKLMDW 1064 532 45 100 BKLMDW 1064 532 45 150 BKLMDW 1064 532 45 200 BK

2. Laser Mirror with Tracer:(nm)

AOI(°)

Size Code1.0" X 1/4"

01.5" X 3/8"
2.0" X 3/8"

248

633 or 670
1.0" X 1/4"
45

1.5" X 3/8"
2.0" X 3/8"

Part Number
LMTR 248 633 0 100 FS
LMTR 248 670 0 100 FS
LMTR 248 633 0 150 FS
LMTR 248 670 0 150 FS
LMTR 248 633 0 200 FS
LMTR 248 670 0 200 FS
LMTR 248 633 45 100 FS
LMTR 248 670 45 100 FS
LMTR 248 633 45 150 FS
LMTR 248 670 45 150 FS
LMTR 248 633 45 200 FS
LMTR 248 670 45 200 FS

Spectral Products(nm)

AOI(°)

0

266

308

633 or 670

633 or 670

0451.5" X 3/8"

LMTR 266 633 0 150 FS
LMTR 266 670 0 150 FS

2.0" X 3/8"

LMTR 266 633 0 200 FS
LMTR 266 670 0 200 FS

1.0" X 1/4"

LMTR 266 633 45 100 FS
LMTR 266 670 45 100 FS

1.5" X 3/8"

LMTR 266 633 45 150 FS
LMTR 266 670 45 150 FS

2.0" X 3/8"

LMTR 266 633 45 200 FS
LMTR 266 670 45 200 FS

1.0" X 1/4"

LMTR 308 633 0 100 FS
LMTR 308 670 0 100 FS

1.5" X 3/8"

LMTR 308 633 0 150 FS
LMTR 308 670 0 150 FS

2.0" X 3/8"

LMTR 308 633 0 200 FS
LMTR 308 670 0 200 FS

1.0" X 1/4"

LMTR 308 633 45 100 FS
LMTR 308 670 45 100 FS

1.5" X 3/8"

LMTR 308 633 45 150 FS
LMTR 308 670 45 150 FS

2.0" X 3/8"

LMTR 308 633 45 200 FS
LMTR 308 670 45 200 FS

1.0" X 1/4"

LMTR 355 633 0 100 FS
LMTR 355 670 0 100 FS

1.5" X 3/8"

LMTR 355 633 0 150 FS
LMTR 355 670 0 150 FS

2.0" X 3/8"

LMTR 355 633 0 200 FS
LMTR 355 670 0 200 FS

1.0" X 1/4"

LMTR 355 633 45 100 FS
LMTR 355 670 45 100 FS

1.5" X 3/8"

LMTR 355 633 45 150 FS
LMTR 355 670 45 150 FS

2.0" X 3/8"

LMTR 355 633 45 200 FS
LMTR 355 670 45 200 FS

1.0" X 1/4"

LMTR 1064 633 0 100 BKLMTR 1064 670 0 100 BK

1.5" X 3/8"

LMTR 1064 633 0 150 BKLMTR 1064 670 0 150 BK

2.0" X 3/8"

LMTR 1064 633 0 200 BKLMTR 1064 670 0 200 BK

1.0" X 1/4"

LMTR 1064 633 45 100 BKLMTR 1064 670 45 100 BK

1.5" X 3/8"

LMTR 1064 633 45 150 BKLMTR 1064 670 45 150 BK

2.0" X 3/8"

LMTR 1064 633 45 200 BKLMTR 1064 670 45 200 BK

633 or 670

45

0

1064

1.0" X 1/4"

633 or 670

45

Optics0355Part Number
LMTR 266 633 0 100 FS
LMTR 266 670 0 100 FS

633 or 670

45

308

Size Code151* λ1 : Laser Wavelength, λ2 : Tracer Wavelength

NOTE :
1. Other dual laser wavelengths or Tracer can be supplied on request.
2. Other substrate sizes and thicknesses are also available.

www.spectraloptics.com

152

Spectral Products

Right Angle Prism Mirrors
Material: UV fused silica or BK7
Clear Aperture: larger than 85%
Surface Quality (Scratch-Dig) : 10-5 for UV fused silica, 20-10 for BK7
Surface Flatness: λ/10 @633nm for UV fused silica, λ/8 @633nm for BK7
Angular Deviation:

3 arc minBevel: <0.5mm @45° typicalReflection : R 0.25 for V-coat, R<0.5% for BBAR

The total internal reflection (TIR) in the right angle prisms with specific anti-reflection (AR) coatings on the two leg sides make themselves the perfectalternatives of 45 degree mirrors. The TIR is independent of wavelength so the RAP mirrors can be used as high energy reflectors for broadband
applications where metal mirrors are too absorbing and dielectric mirrors do not reflect a wide enough bandwidth.
The other advantage of the RAP mirror is that the input and the output lights meet the surfaces always normally so they don't make any difference perpolarization. They are perfectly non-polarizing 45° bending mirrors that any dielectric coatings can't do.

Optics

Product Lists
Wavelength

AR coating type

SizePart Number

248

V coatingR<0.25% per surface

248 355BBAR coatingR<0.5% per surface266

V coatingR<0.25% per surface308

V coatingR<0.25% per surface355

V coatingR<0.25% per surface488

V coatingR<0.25% per surface532

V coatingR<0.25% per surface

425 675

BBAR coatingR<0.5% per surface633

V coatingR<0.25% per surface800

V coatingR<0.25% per surface

633 1064

BBAR coatingR<0.5% per surface1064

V coatingR<0.25% per surface

0.5" (12.7mm)
1.0" (25.4mm)
0.5" (12.7mm)
1.0" (25.4mm)
0.5" (12.7mm)
1.0" (25.4mm)
0.5" (12.7mm)
1.0" (25.4mm)
0.5" (12.7mm)
1.0" (25.4mm)
0.5" (12.7mm)
1.0" (25.4mm)
0.5" (12.7mm)
1.0" (25.4mm)
0.5" (12.7mm)
1.0" (25.4mm)
0.5" (12.7mm)
1.0" (25.4mm)
0.5" (12.7mm)
1.0" (25.4mm)
0.5" (12.7mm)
1.0" (25.4mm)
0.5" (12.7mm)

1319

V coatingR<0.25% per surface1550

V coatingR<0.25% per surface

RAPM 050 FS 248
RAPM 100 FS 248
RAPM 050 FS 248/355
RAPM 100 FS 248/355
RAPM 050 FS 266
RAPM 100 FS 266
RAPM 050 FS 308
RAPM 100 FS 308
RAPM 050 FS 355
RAPM 100 FS 355
RAPM 050 BK 488
RAPM 100 BK 488
RAPM 050 BK 532
RAPM 100 BK 532
RAPM 050 BK 425/675
RAPM 100 BK 425/675
RAPM 050 BK 633
RAPM 100 BK 633
RAPM 050 BK 800
RAPM 100 BK 800
RAPM 050 BK 633/1064
RAPM 100 BK 633/1064
RAPM 050 BK 1064
RAPM 100 BK 1064
RAPM 050 BK 1319
RAPM 100 BK 1319
RAPM 050 BK 1550
RAPM 100 BK 1550

NOTE :
Any other wavelength can be supplied on?request.

1.0" (25.4mm)
0.5" (12.7mm)
1.0" (25.4mm)
0.5" (12.7mm)
1.0" (25.4mm)

Spectral Products

153

Broadband Dielectric Mirrors
Broadband dielectric mirrors are general-purpose components useful in a wide variety of applications. Photometric response is better than 95% weighted
reflectance at both normal and 45° incidence, in either polarization. High reflectivity is also provided at most common laser and LED wavelengths.
Because these mirrors are composed of multi-stack e-beam dielectric materials, physical durability is excelllent, and optical response is retained for years,
in contrast to the gradual degradation seen in even the best protected aluminum mirrors. The standard substrate material is BK7, although other materials
can be supplied.

OpticsExotic Mirrors
Unusual requirements call for creative solutions. Whether you need to pick out a specific harmonic or spoil a parasitic laser line, Spectral Optics can find acoating configuration that will solve your problem. With long experience in solving the hard problems, Spectral Optics is ready to bring your innovationfrom the laboratory into production. Don't give up before you speak with one of our applications specialists.

www.spectraloptics.com

154

Spectral Products

Beam Splitters
Beam Splitters are used to split an input light beam into two separate beams with a certain
reflection/transmission ratio or per different polarization. These can be used as a beam combiner
combining two separate input beams into one output beam. Spectral Optics provide a wide
selection range of beamsplitters. Plate beamsplitters are ideal for high power lasers that opticalcemented cube beam splitters can not be used. Spectral Optics offers a super thin platebeamsplitters to minimize the beam deviation.
Cube beamsplitters split the input light into two 90 beams so they make it easy to optical alignment.
Spectral Optics offers an optical cement-free bonding, molecular fusion for the use with a highpower/energy laser.
Especially for high energy Nd:YAG laser applications, harmonic beamsplitters will be useful for
separating a primary wavelength and its harmonic ones.
Spectral Optics' unique Truesplit makes it possible to achieve non-polarizing beam splitting for highpower lasers.

Plate Beamsplitters

Optics

1. Substrate
Materia l : UV fused silica or BK7 window
Clear Aperture : larger than central 85% of diameter
Surface Quality : 10-5 Scratch-Dig
Surface Flatness : λ/10 @633nm over clear aperture
Diameter tolerance : +0.000/-0.010" (+0.00/-0.25mm)
Thickness tolerance : 0.010" ( 0.25mm)
Bevel : <0.5mm @45° typical
Wedge : 5 arc min
2. Other Specifications
Coating : E-beam multilayer dielectric
Angle of Incidence : 45°
2nd surface : Anti-reflection coating
Damage Threshold : 10J/cm2, 20ns, 20Hz; 1MW/cm2, CW @1064nm
In some applications cube beamsplitters are not appropriate, and instead plate-type splitters are employed. For the highest levels of wavefront fidelity andpower handling, conventional coated BK7 or fused silica plates are excellent choices.
Spectral Optics provides various R/T ratio plate beamsplitters coated with an all dielectric coating. They have almost no absorption and are designed for 45°(or other angle of incidence) at a specific wavelength and a polarization (S-pol, P-pol, or unpol). The 2nd side of the window has an anti-reflection coating.

Product Code : PBS - λ- R - AOI & Pol - Size - Material(nm)

248, 266, 308, 337,
PBS

355, 400, 488, 532,
633, 670, 780, 800,
850, 980, 1030, 1064,
1319, 1550, 1850, etc

R(%)

AOI & POL

20 (5), 30 (5), 40 (

5),

50 (

5), 60 (5), 70 (

5),

45P,

80 (

5), 90 (5), 95 (

5),

45U,

98 (

5), 99 (5), etc

45S,

etc

Size CodeMaterial

1025(1.0" X 0.25")

FS
BK
FS
BK
FS
BK
FS
BK
FS
BK

1525
(1.5" X 0.25")
2025(2.0" X 0.25")
3025(3.0" X 0.25")
4025(4.0" X 0.25")

EX, PBS-248-50-45U-1025-FS : Plate BeamSplitter, 248nm, 50% ( 5) R, 45 Unpolarization, 1.0" dia X 0.25" thickness, Fused Silica.

NOTE:
1. The selection of the substrate material is dependent on the wavelength. Below 400nm, the UV fused silica is recommended.
2. Any other wavelength and R/T ratio can be supplied on request.
3. Other angle of incidence is also available.

Spectral Products

155

Super Thin Plate Beamsplitters
1. Super Thin Plate :Substrate Material : BK7
Substrate Thickness : 0.15mm
Beam Displacement : 50
Diameter : 1"
Surface : ~2λ/inch @633nm before coating
Transmitted wavefront error: >λ/4 @633nm
2. O-ring mount :Material : BK7/ Pyrex
Outside Diameter : 1.0" (25.4mm)
Inside Diameter : 0.7" (17.8mm)
Thickness : 0.25" (6.35mm)
3. Coating :E-beam Multilayer dielectric
2nd surface: Anti-reflection coating
Angle of incidence: 45°, other angles available
Damage Threshold: 10J/cm2, 20ns, 20Hz; 1MW/cm2, CW @1064nm
In some applications cube beamsplitters are not appropriate, and instead plate-type splitters are employed. For the highest levels of wavefront fidelity andthe primary beam from its original path. To avoid this, Spectral Optics has introduced the SuperThinTM‚ splitter, which uses an extremely thin BK7 glass
face sheet bonded to a precision frame to maintain adequate reflected and transmitted wavefront quality.

Any coating that can be applied to a standard plate splitter can be used with SuperThinTM‚, and its power handling capability approaches that of aconventional plate splitter. SuperThinTM‚ components are also very cost competitive, making them a first choice in any compatible application.

Product Code : STPBS - λ- R - AOI & Pol
Size Code

(nm)
STPBS

400, 488, 527, 532, 633, 670, 694,755,
780, 800, 850, 980, 1030, 1053, 1064,
1319, 1550, 1850, etc

20 (
60 (

5), 30 ( 5), 40 ( 5), 50 ( 5),5), 70 ( 5), 80 ( 5), 90 ( 5),
95 ( 5), 98 ( 5), 99 ( 5),Part Number

45S, 45P, 45U, etc

EX, STPBS-532-50-45U : Super Thin Plate BeamSplitter, 532nm, 50% ( 5) R, 45 Unpolarization

NOTE:
1. Any other wavelength and R/T ratio can be supplied on request.
2. Other angle of incidence is also available.
3. Other substrate size or thickness are available. Please check up your requirements with us.

www.spectraloptics.com

Opticspower handling, conventional coated BK7 or fused silica plates are excellent choices. However, the plate's thickness inherently causes lateral deviation of

156

Spectral ProductsHigh Energy Harmonic Beamsplitters
1. Substrate :Material : UV fused silica or BK7
Clear Aperture : larger than 85%
Surface Quality(Scratch-Dig) :10-5 for regular plate windows
60-40 for super thin plate windows
Surface Flatness :λ/10 @633nm for regular plate windows~2λ/inch @633nm for super thin plate windows
Thickness:
0.25"

0.01" for regular plate windows

0.15mm0.02mm for super thin plate windows

Angular Deviation:

3 arc minBevel : <0.5mm @45° typical
Optics

2. Reflectance:
1st Surface: R 99.5% at user specificed wavelength
2nd Surface: Anti-reflection coating, Rp 0.25%, Runp 0.75%, Rs 1.3% @45°
3. Transmittance: Tave90%

4. Angle of Incidence : 45°
5. Damage Threshold : 1MW/cm2, CW ;10J/cm2, 20ns, 20Hz (for R) ; 4J/cm2, 20ns, 20Hz(for T) @1064nm

High energy harmonic beamsplitters are similar with regular dichroic beamsplitters. They were specially designed to separate a primary wavelength andits harmonic wavelength from a laser. Spectral Optics provide these harmonic beamsplitters for Nd:YAG and Ti : Shaaphire laser systems.
The 1st surface with a high energy dichroic coating reflects the target wavelength

99.5% and transmits other target wavelengthsurface has a high energy anti-reflection coating for the target transmitting wavelength.
If the beam size is small (<5mm dia) and the minimal beam deviation is needed, our super thin plate could be a good solution.

90%. The 2nd

Spectral Products

157

Product Lists
1. Regular Plate Harmonic Beamsplitter :R (nm)T (nm)

266

532

266

1064

355

532

355

1064

400

800

532

1064

1064

532

Part Number

1.0"
1.5"
2.0"
1.0"
1.5"
2.0"
1.0"
1.5"
2.0"
1.0"
1.5"
2.0"
1.0"
1.5"
2.0"
1.0"
1.5"
2.0"
1.0"
1.5"
2.0"

RPHBS R266 T532 100 FS
RPHBS R266 T532 150 FS
RPHBS R266 T532 200 FS
RPHBS R266 T1064 100 FS
RPHBS R266 T1064 150 FS
RPHBS R266 T1064 200 FS
RPHBS R355 T532 100 FS
RPHBS R355 T532 150 FS
RPHBS R355 T532 200 FS
RPHBS R355 T1064 100 FS
RPHBS R355 T1064 150 FS
RPHBS R355 T1064 200 FS
RPHBS R400 T800 100 BK
RPHBS R400 T800 150 BK
RPHBS R400 T800 200 BK
RPHBS R532 T1064 100 BK
RPHBS R532 T1064 150 BK
RPHBS R532 T1064 200 BK
RPHBS R1064 T532 100 BK
RPHBS R1064 T532 150 BK
RPHBS R1064 T532 200 BK

OpticsSize* The anti-reflection coating on the 2nd side will be for T λ(nm).
2. Super Thin Plate Harmonic Beamsplitter :R (nm)T (nm)Part Number

355
355
400
532
1064

532
1064
800
1064
532

STHBS R355 T532 025
STHBS R355 T1064 025
STHBS R400 T800 025
STHBS R532 T1064 025
STHBS R1064 T532 025* The anti-reflection coating on the 2nd side will be for T λ(nm).

www.spectraloptics.com

158

Spectral Products

Dichroic Plate Beamsplitters
Long/Short Wave Pass Filters/Combiners
1. Substrate :Material : UV fused silica or BK7
Clear Aperture: larger than 85%
Surface Quality (Scratch-Dig) :10-5 for regular plate windows
60-40 for super thin plate windows
Surface Flatness :λ/10 @633nm for regular plate windows~2λ/inch @633nm for super thin plate windows
Thickness :0.25"

0.01" for regular plate windows

0.15mm0.02mm for super thin plate windows

Angular Deviation:

3 arc minBevel : <0.5mm @45° typical
2. Reflectance :1st Surface : R 99.5% at user specificed wavelength
Optics

2nd Surface : Anti-reflection coating, Rp 0.25%, Runp 0.75%, Rs 1.3% @45°
3. Transmittance :Long Wave Pass: Tave >90%
Short Wave Pass: Tave >85%
4. Damage Threshold: 10J/cm2, 20ns, 20Hz; 1MW/cm2, CW @1064nm

Dichroic Plate Beamsplitters are used to separate or combine two different wavelength beams. They can be called as Long Wave Pass or Short Wave
Pass Filters (Combiner). When the transmittance for longer wavelength range is maximized, it is called "Long Wave Pass". The "Short Wave Pass" iswhen the transmittance for the shorter wavelength range is maximized.
Dichroic Plate Beamsplitters are frequently used at (near) normal or 45° incidence. The region of high reflectivity or low transmission of a dichroic
beamsplitter is similar with that of a mirror.
The transmittance for longer wavelength range is always higher than that for shorter wavelength range. So it is strongly recommend to design the opticalsetup to use the Long Wave Pass for the applications where the light throughput is critical.

Spectral Products

159

Product Lists
1. Regular Plate Dichroic Beamsplitter : RPDBS - Tpolλ- Rpolλ- AOI - Size - Material
Tpol (nm)

RPDBS

Rpol (nm)Ts λ, for S pol
Tp λ, for P pol
Tunp λ, for unpol.

Rs λ, for S pol
Rp λ, for P pol
Runp λ, for unpol.

Ex, Tp1064 : Transmission
P pol for 1064nm

Ex, Rs633 : Reflection
S pol for 633nm

AOI

0, 45

Size CodeMaterial

100(1.0")

FS
BK
FS
BK
FS
BK

150
(1.5")
200(2.0")

2. Super Thin Plate Dichroic Beamsplitter : STDBS - Tpol λ- Rpol λ- AOI - Size
Tpol (nm)

RPDBS

Rpol (nm)Ts λ, for S pol
Tp λ, for P pol
Tunp λ, for unpol.

Rs λ, for S pol
Rp λ, for P pol
Runp λ, for unpol.

Ex, Tp1064 : Transmission
P pol for 1064nm

Ex, Rs633 : Reflection
S pol for 633nm

AOI

0, 45

Size CodeMaterial

100(1.0")

FS
BK
FS
BK
FS
BK

150
(1.5")
200(2.0")NOTE:
1. The selection of the substrate material is dependent on the wavelength. The transmission below 400nm is required, the material has
to be UV fused silica. The reflection below 355nm is required, the material also has to be UV fused silica
2. Any wavelength can be supplied on request.
3. The Tλand the Rλshouldn't be too close. Please check this up with us.

www.spectraloptics.com

OpticsEX, RPDBS-Tp532-Rs633-45-150-BK: Regular Plate Dichroic BeamSplitter, Transmitting P-pol 532nm, Reflecting S-pol 633nm, Angle
of Incidence 45° , 1.5", BK7 glass.

160

Spectral Products

Cube Beamsplitters
Optical Material : UV fused silica, BK7
Surface quality : 10-5 for UV fused silica, 20-10 for BK7Transmitted Wavefront Error: λ/4 @ 633nm
Clear Aperture : ≥85% of central dimension
Anti-reflection coating: R≤0.25% on all leg sides
Damage Threshold :Optical Cement: 1J/cm2, 20ns, 20Hz @1064nm; 100W/cm2, CW @515nm
Molecular Fusion TM : >10J/cm2, 20ns, 20Hz @1064nm; 1MW/cm2, CW @1064nm

Cube beamsplitters offer the flexibility of a large range of coating types and different trade-offs between cost and power handling capability, as well as
the convenience of near-zero beam deviation and right-angle splitting. They cause fewer ghost images than plate beamsplitters. A durable alldielectric partial reflection coating is used at the internal interface. All external four leg surfaces have anti-reflection coating for the specificwavelength. It is recommended to use them with collimated or near collimated input light for the best spectral performance and transmitted wavefront.
Optics

The cemented cube beamsplitters can be used up to 1 J/cm2 at 1064nm. The NEW Spectral Optics' Molecular Fusion™ bonding technology creates
optically contacted units that are permanently bonded, with no cements or other substances to degrade coating performance. It allows to use them invery high energy/power laser application.

Product Lists
1. Optical Cement : CBS-OC - λ- R - Pol - Size - Material(nm)

CBS-OC-

248, 257, 266, 308, 337, 355,
364, 400, 488, 532, 633, 670,
780, 800, 850, 980, 1030, 1064,
1319, 1550, etc

R(%)
20 (
30 (
40 (
50 (
60 (
70 (
80 (

5)
5)
5)
5)
5)
5)
5)

POI

Size Code50(0.5")

S
P
U

100(1.0")

Material
FS
BK
FS
BK

Spectral Products

161

2. Molecular Fusion : CBS-MF - λ- R - Pol - Size - Material
(nm)

R(%)

POI

Size Code20 ( 5)30 ( 5)
CBS-MF-

248, 266, 355, 400, 532, 800,
1064, 1550

40 ( 5)S

50 ( 5)P(other wavelength can be supplied
on request)

60 ( 5)U

70 ( 5)80 ( 5)50(0.5")

Material
FS
BK

100(1.0")FS
BK

EX, CBS-MF-1064-50-U-050-FS: Cube BeamSplitter with Molecular Fusion bonding, 1064nm, 50% ( 5%) R, 45° Unpolarization, 0.5",
Fused Silica.

NOTE:
1. The selection of the substrate material is dependent on the wavelength. Below 400nm, the UV fused silica is recommended.
2. Any other wavelength and R/T ratio can be supplied on request.
3. Please contact us to check up the availability for the molecular fusion bonding on the 1" size.

Opticswww.spectraloptics.com

Spectral Products

163

Variable Beam Splitter/Attenuator
Spectral Optics (a division of Spectral Products) has developed a completely new and innovative type of broadband Variable Beam
Splitter / Attenuator (VBSA) for High Power Laser Applications. Our unique VBSA offers the user continuous adjustment of theReflection/Transmission (R/T) split ratio over an extremely broad range of wavelengths from the Deep UV at 193nm up to 10.6um in the
Far Infrared. Both uncoated and coated versions of our innovative VBSA are available for any Laser wavelength and any polarization.

Spectral Optics exclusive high power Variable Beam Splitter / Attenuator(VBSA) can be designed with no optical coatings over the entrance and exit
apertures for use in very high power Laser applications. Due to the VBSA
innovative new design, the uncoated version will maintain a laser induced
damage threshold nearing the actual bulk laser damage threshold of theinternal substrate materials. Due to this very unique design, extremely highdamage thresholds can be maintained for most all high power Lasers
operating at very specific UV to FIR wavelengths.
OpticsSpectral Optics exclusive high power Variable Beam Splitter / Attenuator(VBSA) can also be used as a Continuously Tunable or Fixed Ratio
Attenuator with the Transmission range typically controlled from 20% T up to
80% T (minimum of ~0% T up to ~90% T) for any UV-FIR wavelength.
Offered with our Anti-Reflection (AR) coatings, the % Transmission can becontrolled up to >99% T over a specific wavelength range.

Spectral Optics standard VBSA Clear Aperture(C/A) standard sizes range fromdiameter up to

diameter or larger; and are available

up to a 2" diameter C/A on a custom basis.

www.spectraloptics.com

164

Spectral Products

Polarization Optics
Spectral Optics has a lot of designs that allow a high degree of control overpolarization properties. In addition to its standard coating list, Spectral Optics
provide various polarizing plate and cube beamsplitters that are deployed in
extremely varied ways in optical systems, from beam sampling to color andpolarization control. Spectral Optics stocks right angle prisms in common
sizes in both BK7 and Fused Silica. Fabrication of beam splitters can bedone using either optical cements or standard optical contacting techniques.
Along with these conventional contacting techniques, Spectral Optics has
introduced its new Molecular FusionTM‚ line of optically contacted high-energy
components.

Waveplates
Molecular FusionTM‚ Zero-Order Waveplates

OpticsUsing its revolutionary new Molecular FusionTM‚ bonding process, Spectral
Optics can now provide zero-order waveplates at prices comparable toordinary multiple-order waveplate. Zero-order waveplates are far superior intemperature stability and wavelength tolerance, but have traditionally been
50 - 75% more expensive than multiple-order components. Using its new
fabrication processes, Spectral Optics zero-order parts cost far less thanthose of other manufacturers, and only 10 - 15% more than comparable
multiple-order components, even less in some applications.
Because of their many performance advantages and new low cost, Spectral
Optics is now offering only zero-order waveplates in all the standard
wavelengths and sizes. There is no reason to design-in multiple-order
waveplates ever again!

Multiple-order waveplates show rapid changes in retardation as the wavelength changes, as seen at left. For a small change λ(orequivalent change in temperature), the multi-order waveplate shows a large transmission change Tmulti. By contrast, the change inretardation of the zero-order plate is very slow, so the same λgives a much smaller change, Tzero.

Spectral Products

165

Polarizer
Spectral Optics is a specialist in polarization technology. In additon to standard calcite and coatedplate polarizers, Spectral Optics has developed new technologies to match any need. The
PolaCubeTM‚ cube beamsplitter provides a high-performance wideband polarizer for low to medium
power visible applications. The SuperThinTM‚ technology stacked polarizer offers very high extinction
ratio, low beam deviation and good power handling in a cost-effective, UV to NIR component.
Spectral Optics is continually expanding its polarization product line, so be sure to inquire about how
we can meet your next polarization requirement.

Opticswww.spectraloptics.com

166

Spectral Products

Polarizing Plate Beamsplitters
1. Substrates :Material : UV fused silica or BK7
Clear Aperture : larger than 85%
Surface Quality (Scratch-Dig) : 10-5 for regular plate windows 60-40 for super thin plate windows
Surface Flatness : λ/10 @633nm for regular plate windows, ~2λ/inch @633nm for super thin plate windows
Thickness : 0.25"

0.01" for regular plate windows 0.15mm

0.02mm for super thin plate windows

Bevel : <0.5mm @45° typical2. Transmitted Wavefront Error : λ/8 at 633nm
3. Damage Threshold : 10J/cm2, 20ns, 20Hz @1064nm ; 1MW/cm2, CW @1064nm

OpticsPolarizing plate beam splitters (PPBS) separates input beam into two
beams by reflecting S-polarization beam and transmitting P-polarization.
These are an ideal choice for high power laser application which requires
high damage threshold. Spectral Optics provide these PPBS for Brewster's
angle (56°) and for 45°. The Brewster's angle PPBS give higher extinction
ratio but the reflected beam has this Brewster's angle. The 45° angle PPBS
have lower extinction ratio but make it easy to use in the optical setup andalso can be used as beam combiners. These PPBS are mostly used forhigh power Nd:YAG laser applications but Spectral Optics can provide any
wavelength PPBS on customer's request.

Product Lists
1. Regular Plate :λ(nm)AOI(° )

MaterialTp(%)

T p / Ts

Size
1"
2"
1"
2"
1"
2"
1"
2"
1"
2"
1"
2"
1"
2"

1/4"
1/4"
1/4"
1/4"
1/4"
1/4"
1/4"
1/4"
1/4"
1/4"
1/4"
1/4"
1/4"
1/4"

Part Number
PPBS 248 1025 FS 56
PPBS 248 2025 FS 56
PPBS 266 1025 FS 56
PPBS 266 2025 FS 56
PPBS 355 1025 FS 56
PPBS 355 2025 FS 56
PPBS 532 1025 BK 56
PPBS 532 2025 BK 56
PPBS 532 1025 BK 45
PPBS 532 2025 BK 45
PPBS 1064 1025 BK 56
PPBS 1064 2025 BK 56
PPBS 1064 1025 BK 45
PPBS 1064 2025 BK 45

248

56

3

UV FS

85

100/1

266

56

3

UV FS

85

100/1

355

56

3

UV FS

90

100/1

56

3

BK7

95

200/1

BK7

>96

500/1

BK7

95

200/1

BK7

>97

500/1

AOI(° )

MaterialTp(%)

T p / Ts

Size

Part Number

56
3
45
56
3
45

BK7
BK7
BK7
BK7

95
>96
95
>97

200/1
500/1
200/1
500/1

25mm
25mm
25mm
25mm

STPPBS 532 025 BK 56
STPPBS 532 025 BK 45
STPPBS 1064 025 BK 56
STPPBS 1064 025 BK 45

532
45
56

3

1064
45

2. Super Thin Plate :
λ(nm)
532
1064

NOTE:
1. The selection of the substrate material is dependent on the wavelengthSpectral Products

167

Polarizing Cube Beamsplitters
Optical Material : UV fused silica, BK7
Surface quality : 10-5 for UV fused silica, 20-10 for BK7Transmitted Wavefront Error : λ/4 @ 633nm
Clear Aperture : ≥85% of central dimension
Anti-reflection coating : R≤0.25% on all leg sides
Field of view :3°Extinction Ratio :OC version : Tp/Ts > 1000:1 for λ> 450 nm, T p/T s > 500:1 for λ≤ 450 nm
MF version : Tp/Ts > 5000:1 for λ> 450 nm, T p/T s > 3000:1 for λ≤ 450 nm
Reflection : Rs > 99.9% for λ> 450 nm, Rs > 99.5% for λ≤ 450 nm
Transmission : Tp > 90% for optical cement, Tp > 95% for molecular fusion
Damage Threshold :Optical Cement : 1J/cm2, 20ns, 20Hz @1064nm; 100W/cm2, CW @515nm
Molecular FusionTM : >10J/cm2, 20ns, 20Hz @1064nm; 1MW/cm2, CW @1064nm

range of coating types and different trade-offs between cost and power handling capability, as well as the convenience of near-zerobeam deviation and right-angle splitting. Especially polarizing cube beamsplitters are used to split a laser beam into two orthogonallypolarized components or combine them into one beam. The P-polarization is transmitted strate through and the S-polarization isreflected at 90°.
For lower power applications, the cubes are assembled from coated 90° angle prisms cemented together using index-matchingtransparent adhesives to avoid interface losses and provide a strong, stable part. In general, it can be used up to 1J/cm2 at 1064 nm. The
input light beam has to come into the coated side first, which is marked on the cube.
Optically contacted cubes have much higher damage thresholds and wide wavelength response, with better beam quality since theindex inhomogeneity of the optical cement is not present to degrade wavefront accuracy in the transmitted beam. However, they are
more expensive and are not generally as stable mechanically, due to the fragile nature of the optically contacted interface. The newSpectral Optics Molecular FusionTM‚ bonding technology creates optically contacted units that are permanently bonded, with no cements
or other substances to degrade coating performance.

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OpticsCube beamsplitters consist of two right angle prisms with special dielectric coating on the interface. They offer the flexibility of a large

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Spectral Products

Product Lists
1. Optical Cement : PCBS - OC - λ- Size - Material(nm)

CBS-OC-

257, 266, 308, 337, 351, 355, 364, 400, 488,
532, 633, 670, 780, 800, 850, 980,1030,
1064, 1319, 1550, etc

Size Code50(0.5")

Material
FS
BK

100(1.0")

BK

Size CodeMaterial

50(0.5")

BK

100(1.0")BKFS

2. Molecular Fusion : PCBS - MF - λ- Size - Material(nm)

PCBS- MF-

248, 266, 355, 400, 532, 800, 1064, 1550
(other wavelength can be supplied on request)

FS

FS

EX, PCBS-MF-1064-050-FS: Polarizing Cube BeamSplitter with Molecular Fusion bonding, 1064nm, 0.5", Fused Silica.
OpticsNOTE:
1. The selection of the substrate material is dependent on the wavelength. Below 450nm, the UV fused silica is recommended.
2. Any other wavelength can be supplied on request

Spectral Products

169

Broadband Polarizing Cube Beamsplitters
Optical Material : SF2 glass
Surface quality : 40-20
Transmitted Wavefront Error : λ/4 @ 633nm
Clear Aperture : ≥85% of central dimension
Field of view :3°Extinction Ratio : T p/T s > 500:1
Reflection : Rs > 99.5%
Transmission : Tp_ave > 90%
Damage Threshold : 1J/cm2, 20ns, 20Hz @1064nm; 100W/cm2, CW @515nm
Spectral Optics provides broadband polarizing beamsplitter cubes that are made from SF2 glasses. Thanks to the high refractive index
of SF2 glass, it can make these cube beamsplitters provide a high-performance broadband polarization.

OpticsDue to the limitation of the material, it is applicable for low to mid power light source applications, up to 1 J/cm2.

Product List : BPCBS - Size - λ1 - λ2Size Code50(0.5"/12.7mm)
BPCBS

100
(1.0"/25.4mm)

1 - 2 (nm)Rave

450 700
700 1000
1000 1500
450 1000
450 1500
450 700
700 1000
1000 1500
450 1000
450 1500

<0.5%
<0.5%
<0.5%
<2.0%
<3.0%
<0.5%
<0.5%
<0.5%
<2.0%
<3.0%

EX, BPCBS-050-450-700: Broadband Polarizing Cube BeamSplitter, 0.5" size, 450-700nm range

NOTE:
The beam has to enter through the prism marked with the dot to avoid the damage.

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