SPECIAL PRODUCTS
Discrete Pyros

DISCRETE PYROSMONITORSKEY FEATURES
1. BROAD SPECTRAL RESPONSE
From 0.1 to 1000 μm

2. EASY TO INTEGRATE FORMAT
ENERGY DETECTORS

TO5 and TO8 packages make the QS detectors smalland easy to integrate in an existingsystem

3. LARGE AREA SENSORSPOWER DETECTORS

5 mm Ø and 9 mm Ø diameter pyroelectric sensors
make optical alignment easier

4. SEVERAL IR WINDOWS IN OPTIONPHOTO DETECTORSHIGH POWER SOLUTIONS• Quartz:• Barium Fluoride:• Sapphire:• Silicon:• AR Germanium:

0.2 – 3.0 μm
0.2 – 17.5 μm
0.1 – 7.0 μm
1.1 – 9.0 μm and 50 – 1000 μm
8 – 14 μm

AVAILABLE MODELSBEAM DIAGNOSTICS

SPECIAL PRODUCTS

OEM DETECTORSTHZ DETECTORS

4 families of products to choose from:160• QS-L

Discrete Pyro Detectors, Low Noise Level• QS-H

Discrete Pyro Detectors, High Average Power• QS-IF

Hybrid Pyro Detectors, Current Mode, Fast Response• QS-IL

Hybrid Pyro Detectors, Current Mode, Low Noise LevelACCESSORIESQS-I-TEST
Evaluation Test Box (current)

SEE ALSO

Permanent IR Windows(Various types available)

Pelican Carrying CaseTECHNICAL DRAWINGS
LIST OF ALL ACCESSORIESAPPLICATION NOTESCOMPENSATING CURRENT MODEAMPLIFICATION USING QS-I-TEST
HOW TO HANDLE SENSITIVEPYROELECTRIC DETECTORSTHERMAL SATURATION IN HYBRIDPYROELECTRIC DETECTORSHOW THEY WORK: QS-I-TESTHIGHEST PERFORMANCE WITHQS DETECTORSQS DETECTORS PIN-OUTS &DESCRIPTIONSQS-I-TEST SPECIFICATIONS

142196201925202181
201926201927
201928201931202187DISCRETE PYROSQS-L & QS-H
Discrete Pyro Detectors, Low Noise Level
MONITORS

SPECIFICATIONSCURRENT RESPONSIVITY

QS1-L

QS2-L

QS3-L

QS5-L

QS9-L

1 μA/W

0.5 μA/W

0.5 μA/W

0.25 μA/W

0.25 μA/W

1 mm Ø

2 mm Ø

3 mm Ø

5 mm Ø

9 mm Ø

TO5TO5TO5TO5TO8ENERGY DETECTORSEFFECTIVE APERTURE
PACKAGEMEASUREMENT CAPABILITY

0.1 - 1000 μm

0.1 - 1000 μm

0.1 - 1000 μm

0.1 - 1000 μm

0.1 - 1000 μm

50 mW

50 mW

50 mW

50 mW

50 mW

Capacitance (at 1000 Hz)

15 pF

22 pF

60 pF

90 pF

250 pF

Current Responsivity (at 630 nm)

1 μA/W

0.5 μA/W

0.5 μA/W

0.25 μA/W

0.25 μA/W

Thermal Frequency (3 dB)

3.5 Hz1.6 Hz0.8 Hz0.5 Hz0.25 Hz

Temperature Coefﬁcient

0.2%/°C

0.2%/°C

0.2%/°C

0.2%/°C

0.2%/°C

POWER DETECTORS

Spectral Range
Max Average Power

HIGH POWER SOLUTIONSORDERING INFORMATION
Product Name
Product Number

QS1-L

QS2-L

QS3-L

QS5-L

QS9-L

201657201659201662

201664

201666

QS1-H

QS2-H

QS3-H

QS5-H

QS9-H

500 mW

500 mW

500 mW500 mW

500 mW

1 mm Ø

2 mm Ø

3 mm Ø

5 mm Ø

9 mm Ø

PACKAGETO5TO5TO5TO5TO8PHOTO DETECTORSCURRENT RESPONSIVITY
EFFECTIVE APERTURE

MEASUREMENT CAPABILITY
0.1 - 1000 μm

0.1 - 1000 μm

0.1 - 1000 μm

0.1 - 1000 μm

0.1 - 1000 μm

500 mW

500 mW

500 mW

500 mW

500 mW

Capacitance (at 1000 Hz)

3 pF

12 pF

30 pF

90 pF

250 pF

Current Responsivity (at 630 nm)

0.25 μA/W

0.25 μA/W

0.25 μA/W

0.25 μA/W

0.25 μA/W

Thermal Frequency (3 dB)

5 Hz

5 Hz

5 Hz5 Hz5 Hz

Temperature Coefﬁcient

0.2%/°C

0.2%/°C

0.2%/°C

0.2%/°C

0.2%/°C

THZ DETECTORS

Spectral Range
Max Average PowerOEM DETECTORSORDERING INFORMATION
Product Name
Product Number

QS1-L

QS2-L

QS3-L

QS5-L

QS9-L

201658

201661

201663

201665

201667

Effective Aperture

1 mm Ø

2 mm Ø

3 mm Ø

5 mm Ø

9 mm Ø

Package

TO5TO5TO5TO5TO8Sensor

Pyroelectric

Pyroelectric

Pyroelectric

Pyroelectric

Pyroelectric
MTMTMTMTMT

9.1Ø x 6.4D mm

9.1Ø x 6.4D mm

9.1Ø x 6.4D mm9.1Ø x 6.4D mm

15.2Ø x 6.4D mm

Weight

1.0 g

1.0 g

1.0 g

1.0 g

1.5 g

BEAM DIAGNOSTICS

AbsorberDimensions (Excluding pins)

SPECIAL PRODUCTS

PHYSICAL CHARACTERISTICS

Speciﬁcations are subject to change without notice

Catalogue 2017_V2.0

T 418.651.80 03 | 1888 5GENTEC | F 418.651.1174 | info@gentec-eo.com

.com

161

SPECIAL PRODUCTS

QS-IF

OEM DETECTORSTHZ DETECTORSPHOTO DETECTORSHIGH POWER SOLUTIONSPOWER DETECTORSENERGY DETECTORSMONITORS

Hybrid Pyro Detectors, Current Mode, Fast ResponseSPECIFICATIONSQS1-IF

QS2-IF

QS3-IF

QS5-IF

QS9-IFVOLTAGE RESPONSIVITY

100 V/W

50 V/W

50 V/W

25 V/W

25 V/W

CURRENT RESPONSIVITY

1 μA/W

0.5 μA/W

0.5 μA/W

0.25 μA/W

0.25 μA/W

EFFECTIVE APERTURE

1 mm Ø

2 mm Ø

3 mm Ø

5 mm Ø

9 mm Ø

PACKAGETO5TO5TO5TO5TO8MEASUREMENT CAPABILITY
Spectral Range

0.1 - 1000 μm

0.1 - 1000 μm

0.1 - 1000 μm

0.1 - 1000 μm

0.1 - 1000 μm

Max Average Power

50 mW

50 mW

50 mW

50 mW

50 mW

Noise Equivalent Power a

5x10-8 W/(Hz)½a6Detectivity½8x10-8 W/(Hz)½6½8x10-8 W/(Hz)½6

1.6x10-7 W/(Hz)½½

1.8x10 cm(Hz) /W

2.2x10 cm(Hz) /W

3.3x10 cm(Hz) /W

6½

2.8x10 cm(Hz) /W

1.6x10-7 W/(Hz)½
5.0x106 cm(Hz)½ /W

Capacitance (at 1000 Hz)

15 pF

22 pF

60 pF

90 pF

250 pF

Current Responsivity (at 630 nm)

1 μA/W

0.5 μA/W

0.5 μA/W

0.25 μA/W

0.25 μA/W

Voltage Responsivity b

100 V/W

50 V/W

50 V/W

25 V/W25 V/W

Thermal Frequency (3 dB)

3.5 Hz1.6 Hz0.8 Hz0.5 Hz0.25 Hz

Feedback Resistor

100 M:

100 M:

100 M:

100 M:

100 M:

Supply Voltage± 12 V± 12 V± 12 V± 12 V± 12 VPHYSICAL CHARACTERISTICS
Effective Aperture

1 mm Ø2 mm Ø

3 mm Ø

5 mm Ø

9 mm Ø

Package

TO5TO5TO5TO5TO8Sensor

Pyroelectric

Pyroelectric

Pyroelectric

Pyroelectric

Pyroelectric

Absorber

MTMT

MT

MT

MT

Dimensions

9.1Ø x 6.4D mm

9.1Ø x 6.4D mm

9.1Ø x 6.4D mm

9.1Ø x 6.4D mm

15.2Ø x 6.4D mm

Weight

1.0 g

1.0 g

1.0 g

1.0 g

1.5 g

ORDERING INFORMATION
Product Name
Product Number

QS1-IF

QS2-IF

QS3-IF

QS5-IF

QS9-IF

201679201680201681

201682

201683Speciﬁcations are subject to change without noticea. 630 nm, 15 Hz, largeur de bande de 1 Hz
b. 630 nm, 15 Hz

BEAM DIAGNOSTICS

SPECIAL PRODUCTS

QS-I-TEST EVALUATION TEST BOX

162

QS-I-TEST
Batteries+9V/-9V

Rf Resistors

105 - 1010 :Cf Compensating

Yes

Package

101.6H x 127L x 58.4P

Optical Mount¼-20 Threaded

Front Bezel

SM1 (1.035-40)

Product Number

201693* For details, contact your Gentec-EO representativeDISCRETE PYROS

QS-ILHybrid Pyro Detectors, Current Mode, Low Noise Level
MONITORS

SPECIFICATIONSQS2-IL

QS3-IL

QS5-IL

QS9-IL

50 kV/W

25 kV/W

25 kV/W

13 kV/W

13 kV/W

CURRENT RESPONSIVITY

1 μA/W

0.5 μA/W

0.5 μA/W

0.25 μA/W

0.25 μA/W

EFFECTIVE APERTURE

1 mm Ø

2 mm Ø

3 mm Ø

5 mm Ø

9 mm Ø

PACKAGETO5TO5TO5TO5TO8ENERGY DETECTORS

QS1-ILVOLTAGE RESPONSIVITY

MEASUREMENT CAPABILITY0.1 - 1000 μm

0.1 - 1000 μm

0.1 - 1000 μm

0.1 - 1000 μm

0.1 - 1000 μm

50 mW

50 mW

50 mW

50 mW

50 mW

Noise Equivalent Power a

8x10-10 W/(Hz)½a82x10-9 W/(Hz)½6x10-9 W/(Hz)½
7.0x10 cm(Hz) /W

1.3x108 cm(Hz)½ /W

Capacitance (at 1000 Hz)

15 pF

22 pF

60 pF

90 pF

250 pF

Current Responsivity (at 630 nm)

1 μA/W

0.5 μA/W

0.5 μA/W

0.25 μA/W

0.25 μA/W
13 kV/W

Voltage Responsivityb7½50 kV/W

25 kV/W

25 kV/W13 kV/W

Thermal Frequency (3 dB)

3.5 Hz1.6 Hz0.8 Hz0.5 Hz0.25 Hz

Feedback Resistor

100 G:

100 G:

100 G:

100 G:

100 G:

Supply Voltage± 5 to ± 12 V

± 5 to ± 12 V

± 5 to ± 12 V

± 5 to ± 12 V

± 5 to ± 12 V

HIGH POWER SOLUTIONS

1.3x10 cm(Hz) /W

8½6x10-9 W/(Hz)½

9.0x10 cm(Hz) /W

7½2x10-9 W/(Hz)½

1.1x10 cm(Hz) /W

Detectivity½POWER DETECTORS

Spectral Range
Max Average PowerPHYSICAL CHARACTERISTICS
1 mm Ø

2 mm Ø

3 mm Ø5 mm Ø9 mm Ø

TO5TO5TO5TO5TO8Sensor

Pyroelectric

Pyroelectric

Pyroelectric

Pyroelectric

Pyroelectric

Absorber

MTMTMTMT

MT

Dimensions

9.1Ø x 6.4D mm

9.1Ø x 6.4D mm

9.1Ø x 6.4D mm

9.1Ø x 6.4D mm

15.2Ø x 6.4D mm

Weight

1.0 g

1.0 g

1.0 g

1.0 g

1.5 g

PHOTO DETECTORS

Effective Aperture
Package

THZ DETECTORSORDERING INFORMATION
Product Name
Product Number

QS1-ILQS2-IL

QS3-IL

QS5-IL

QS9-IL201684

201685

201686201687

201688OEM DETECTORS

Speciﬁcations are subject to change without noticea. 630 nm, 5 Hz, 1 Hz Bandwidthb. 630 nm, 15 Hz

QS-I-TEST EVALUATION TEST BOX
SPECIAL PRODUCTS

QS-I-TEST+9V/-9V

Rf Resistors

105 - 1010 :Cf Compensating

Yes

Package

101.6H x 127L x 58.4P

Optical Mount¼-20 Threaded

Front Bezel

SM1 (1.035-40)

Product Number

201693* For details, contact your Gentec-EO representative

Catalogue 2017_V2.0

T 418.651.80 03 | 1888 5GENTEC | F 418.651.1174 | info@gentec-eo.com.com

BEAM DIAGNOSTICS

Batteries163

SPECIAL PRODUCTSDISCRETE PYROSMONITORSPYROELECTRIC THERMAL DETECTORS

281 CASE

QS-L AND QS-H DISCRETE PYROS
Our passive Discrete Pyroelectric Detectors range from 1 to 9 mm in diameter and are provided in two
conﬁgurations: high sensitivity or high average power. They present a pyroelectric detector element
covered with our metallic coating (MT) and are packaged in a miniature TO-5 or TO-8 can. The diagram
shown left identiﬁes the Pin-out for both types of detectors. Our organic black coating (BL), increases
the optical absorption and helps ﬂatten the spectral response. We also offer a number of permanent
IR Windows that can be added to the TO can. These discrete pyro detectors are ideal for pulsed laserapplications.

QS-L (left) and QS-H (right) Pin-Outs

QS-IF AND QS-IL CURRENT MODE HYBRID PYROS
7Rf2

68

These detectors offer high gain (>105 V/W) and/or high bandwidth (>10 MHz). In this conﬁguration, the pyroelectricdetector element is combined to a low noise operational ampliﬁer. The QS-IL models are designed for high performanceat low to medium frequencies, while the QS-IF models offer good performance at medium to high frequencies. Thesedetectors are very easy to use. Simply supply the +/- 10 to 15 V to power the operational ampliﬁer and add an externalresistor, if required, to adjust the bandwidth and you are ready to measure pulsed, modulated or chopped sources, fromnJ to mJ and nW to W. These detectors also make great candidates for any variety of broadband analytical instruments
or laser measurement products.

4QS-IF and QS-IL Pin-Out

0.1 μF

SPECIAL PRODUCTS
BEAM DIAGNOSTICS

164281 CASE

OEM DETECTORSTHZ DETECTORSPHOTO DETECTORSHIGH POWER SOLUTIONSPOWER DETECTORSENERGY DETECTORS

Our pyroelectric detectors are a class of room temperature thermal detectors that produce a current output thatis directly proportional to the rate of change of temperature when exposed to a source of radiation. They are best
described by an AC current source, capacitor and resistor. Their current output is governed by the equation I =p(T)·A·dT/dt, where I is current, p(T) is the Pyro Coefﬁcient, A is the area as deﬁned by the front electrode, anddT/dt is the rate of temperature change of the pyro crystal. The advantages of a pyroelectric detector over otherIR detectors are: room temperature operation, broad spectral response, high sensitivity (D*) and fast response(sub-nsec into 50 :).

REXT

7CEXT

Rf

2QS
DETECTOR+V

6VOUT
840.1 μF

QS-VL and QS-IL Circuitry-12V

VOLTAGE OUTPUT VS. FREQUENCYOur QS-VL and QS-IL Hybrid Detectors are designed to maximize voltage output at low frequencies andtherefore include load and feedback resistors in the 100 G: to 300 G: range. They are also designed into
8-pin TO packages that allow the addition of an “external resistor” to lower the output and increase thebandwidth. The circuit diagram at the left shows a typical hook up for our QS5-IL detector (with our MTcoating), using external resistors and capacitors. Our QS-IF series, on the other hand, are designed for highbandwidth applications and therefore include a smaller feedback resistor of 100 M:. For expert help on
designing a detector circuit please contact us info@gentec-eo.com.

DISCRETE PYROSDISCRETE PYROSPOWER DETECTORS

Typical QS-IL Voltage Output inPower Measurement Mode

OPERATION IN ENERGY MEASUREMENT MODE

HIGH POWER SOLUTIONSOur Pyroelectric Detectors are an ideal choice when measuring the performance of your pulsed laser inthe range of nJ to mJ, across the full spectrum! The scope trace at the left represents the typical output
from a QS9-IL, when used with our QS-I-TEST set up as an integrating Joulemeter. Note the fast rise to apeak and then slower decay governed by the RC time constant selected for the integrating circuit. In thisconﬁguration you can measure absolute pulse energy, rep rate, and pulse-to-pulse stability. The maximum
pulse width of your source is determined by the RC time constant you select and there is no limit as tohow short the pulse can be!

PHOTO DETECTORS

Typical QS-IL Voltage Output inEnergy Measurement Mode

BROAD SPECTRAL RESPONSE

100%
90%

BL

Absorptance

70%
60%
50%
MT

40%
30%
20%
10%

THZ DETECTORS

Unlike photoconductive and photovoltaic detectors, our Pyroelectric Thermal Detectors are not limited to asmall part of the electromagnetic spectrum. They are truly broad spectrum detectors, sensitive from 0.1 μm
to 3000 μm (EUV, FAR IR, and THz). Any and all radiation absorbed by our coatings or pyro crystal will resultin a measurable signal. The two plots at the left show the relative spectral response of detectors with MTand BL coatings. Note that the well documented, NIST traceable calibrated portion of these curves runs
from 0.25 μm to 15 μm. There are currently no traceable optical standards for measurements > 15 μm.

80%

ENERGY DETECTORS

When using our QS-IL Hybrid Detector to measure the Power (in Watts) of your CW or High Rep Ratesource (Quasi-CW), you will need to employ an optical chopper. The diagram at the left shows the typicalvoltage output of a QS5-IL when used with our QS-I-TEST evaluation test box. Note that the voltage output
is an approximate “square wave” whose rise and fall times are governed by the RC time constant of thecircuit. The optical power is directly proportional to the peak voltage minus the baseline voltage. We
calibrate these devices when operating in this mode.

MONITORS

OPERATION IN POWER MEASUREMENT MODE

0%0.1110OEM DETECTORS

Wavelength (μm)

Absorption Curves ofQS Pyroelectric Detectors

SPECIAL PRODUCTS
BEAM DIAGNOSTICS

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Catalogue 2017_V2.0

T 418.651.80 03 | 1888 5GENTEC | F 418.651.1174 | info@gentec-eo.com.com

165