Features

S-waveplates Converts linear polarization to radial or azimuthal polarization
 Generates optical vortex (if incident polarization is circular)
 High damage threshold !"  #   applicable)    $ % &   '        * ##+   , ##2
 No segment stitching

Applications
 STED microscopy Micromachining
Description
S-waveplate is a super-structured waveplate which converts incident
linear polarization to radial or azimuthal polarization. S-waveplate
can also be used to convert incident circular polarization to a beam
carrying optical angular momentum. Product is unique for its highdamage threshold at least 100 times exceeding alternative liquid
crystal devices. S-waveplate is fabricated inside UVFS bulk.

Linearpolarization

S-waveplate

Radial/azimuthal
polarization%   
polarizer

 Microdrilling high-aspect-ratio channels
 Generate cylindrical vector beams
 Multiple particle trapping Micro-mill driven by optical tweezers
 Intracavity element to generate radial polarization
 3  &  4  &   

ccessories

 Realization of polarization evolution on higher-order Poincaré
sphereIncident Gauss beam. S-waveplate in cross-polarized light. Radial/azimuthal                               transmission axis).

 Engineering of novel optical material
 Addition and subtraction of optical orbital angular momentum Hybrid classical-quantum communication

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crystalline Quartz
WaveplatesFeatures• Waveplates are made from excellent quality laser grade crystalline
quartz material• We specialize in air-spaced zero-order waveplates• dual wavelength waveplates are also available

Standard specifications
Material

Description
Altechna is offering a wide range of zero order (ZO) and low order (LO)waveplates for uV, VIs, NIr range (for any wavelength in 240-2600 nm
range). all waveplates we provide are made from excellent quality
laser grade crystalline quartz material.

crystalline quartz

diameter tolerance+0/-0.2 mm

thickness tolerance±0.2 mmsurface quality20-10 s-dtransmitted wavefront
distortion (tWd)<λ/10 @ 632.8 nm

retardation tolerance

λ/300 @ 20°c

Parallelism error<3 arcsec

coatings

ZO waveplate is constructed by two quartz plates with their fastaxes crossed. The difference in thickness between the two plates
determines the retardance. ZO waveplates offer a substantially lower
dependence on temperature, angle and wavelength change thanconventional monolithic Lo waveplates.

AR (R<0.2%) on each surface

Laser induced damage
threshold>10 J/cm2 for 10 ns pulses @ 1064 nm

Mounting

Mounted in Ø25.4x6 mm black anodized
metal mountTo suit different applications, air-spaced or optically contacted ZO
compensated phase retardation waveplates are available fromaltechna.
the air-spaced construction enables to use the waveplate for highpower laser applications. the damage threshold is more than 10 J/cm2
for 10 ns pulses @ 1064 nm.
Retardation vs. wavelength for ZO and LO crystalline quartz
waveplates
7.25 wave LO waveplate @ 633 nm

0.25 wave ZO waveplate @ 633 nm

7.60000.26507.50000.2600Retardance (waves)

Retardance (waves)7.40007.30007.20007.10000.25500.25000.24507.00000.24006.90006.80000.2350
0.61

0.62

0.63

0.64

0.65

0.66

0.61

0.62

0.63

0.64

Lambda (microns)

Lambda (microns)www.phototechnica.co.jp〒336-0017 埼玉県さいたま市南区南浦和 1-2-17

TEL:048-871-0067 FAX:048-871-0068

e-mail:voc@phototechnica.co.jp

0.65

0.66

High energy
WaveplatesStandard specifications
Material

crystalline quartz or MgF2

diameter tolerance+0/-0.2 mm

thickness tolerance±0.2 mmsurface quality

20-10 s-dtransmitted wavefront distortion(tWd)<λ/10 @ 632.8 nm

retardation tolerance

Description
epoxy free waveplates for high energy applications withstand energy
density up to >20 J/cm2 @ 1064 nm for 10 ns pulses with 10 Hz pulse
repetition rate. unique design minimizes adjustment sensitivity
because of wide acceptance angle. since usage temperature
bandwidth is more than 200 K, waveplate can be used in hazardous
conditions with no additional losses. Waveplate order depends ondesign wavelength and retardation.

λ/300 @ 20°c

acceptance angle

11°

Parallelism error<3 arcsec

coatings

AR (R<0.2%) on each surface

Laser induced damage threshold>20 J/cm2 for 10 ns pulses @1064 nmMounting

Mounted in Ø25.4x6 mm blackanodized metal mount35
34Features

33
32
LIDT, J/cm2• High damage threshold• High extinction ratio

31
30
29

• Wide acceptance angle

28• Wide temperature bandwidth

26

27

25
1

• Wide spectral bandwidth

10100
Number of pulses• extremely useful in uV applications

www.phototechnica.co.jp〒336-0017 埼玉県さいたま市南区南浦和 1-2-17

TEL:048-871-0067 FAX:048-871-0068

e-mail:voc@phototechnica.co.jp

1000achromatic (Broadband)
Waveplates

φtDStandard specifications
MaterialDescription
an achromatic waveplate (aWP) is a pair of crystal quartz andmagnesium fluoride plates.
Because of the difference in dispersion in these uniaxial positive
crystals it is possible to calculate thickness of each plate so thatbirefringent phase shift in assembly changes very slowly over a certain
wavelength range. this is a way to obtain achromatic zero order
waveplates. such aWPs are necessary for various devices and may
replace a number of ordinary quartz waveplates operating at a single
wavelength only. We can offer series of Achromatic Waveplates withphase shifts shown in graphs below.

crystalline quartz and MgF2

diameter tolerance+0/-0.2 mm

thickness tolerance±0.2 mmsurface quality

40-20 s-dtransmitted wavefront
distortion (tWd)<λ/4 @ 632.8 nm

retardation tolerance

λ/100 @ 20°c

Parallelism error<10 arcsec

coatings

BBar on each surface>5 J/cm2 for 10 ns pulses @ 1064 nm

Laser induced damage
threshold
Mounting

Mounted in Ø25.4x6 mm black anodized
metal mountFeatures• operates over broad wavelength range• We specialize in air-spaced achromatic waveplates• all waveplates are BBar coated and mounted by default

Typical Retardation Curves for 650-1100 nm AchromaticWaveplates

0.515

0.256

0.510

0.254

0.505

0.252

Retardation (λ)

Retardation (λ)

Retardation for 2-APW-L2-012C

0.500
0.495

0.250
0.248
0.246

0.490

0.244

0.485
650

700

750

800

850

900

950

1000

1050

1100

650

700

750

800

850

900

Wavelength (nm)Wavelength (nm)Retardation for 2-APW-L4-012C

www.phototechnica.co.jp〒336-0017 埼玉県さいたま市南区南浦和 1-2-17

TEL:048-871-0067 FAX:048-871-0068

e-mail:voc@phototechnica.co.jp

950

10001050

1100

Mid-Ir WaveplatesStandard specifications
diameter tolerance+0/-0.2 mm

clear aperture>10 mmsurface quality

60-40 s-dtransmitted wavefront distortion(tWd)
retardation tolerance
Parallelism error<λ/4 @ 632.8 nm

λ/100 @ 20°c
<3 arcmin

Mounting

Mounted in Ø25.4 mm aluminum
mountcoatings

ar on each surface

Description
We offer Zero Order half (λ/2) waveplates and quarter (λ/4) waveplateswith clear aperture from 10 mm up to 18 mm for the range 2.8 - 9.0 µm.
Waveplates are coated with dielectric ar layers for the Mid-Ir range
in order to reduce losses caused by Fresnel reflection. Characteristic
plates thickness is 0.2 - 1.0 mm. generally, Mid-Ir waveplates aremounted into the metal holder for easier handling and adjustment.

Features• ZO waveplates for Mid-IR applications (2.8-9.0 μm)• custom size available

Miscellaneous• custom design waveplates are available in small and mass
production quantities

www.phototechnica.co.jp〒336-0017 埼玉県さいたま市南区南浦和 1-2-17

TEL:048-871-0067 FAX:048-871-0068

e-mail:voc@phototechnica.co.jp