Waveplates & Retarders

  • Update:Apr 01, 2020
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Sintec Optronics designs, develops, and manufactures an extensive range of high quality polarization systems and components including liquid crystal devices.

Product Introduction

Waveplates

Waveplate

Part #

(λ/100 Bandwidth)

λ/2 @532 nm

Acceptance Angle

Damage Threshold

Low order Waveplate

ST-WPL

0.55nm (T=0.5060
mm)

Med.

1GW/cm2

Zero Order

Cemented

ST-WPC

19.22nm
(ΔT=0.0145 mm)

Low

~ 10MW/cm2

Optically Contracted

ST-WPO

19.22nm
(ΔT=0.0145 mm)

Low

~200 MW/cm2

Air Spaced

ST-WPA

19.22nm (ΔT=0.0145 mm)

Low

~500 MW/cm2

True Zero Order Waveplate

Cemented

ST-WPF

19.22nm (T=0.0145 mm)

High

~ 10MW/cm2

Single Plate

ST-WPS

19.22nm (T=0.0145 mm)

High

> 1GW/cm2

Achromatic Waveplate

ST-WPB

250 nm

Low

10MW/cm2

Dual Wavelength Waveplate

ST-WPD

Very Small

Low

 

1. Low Order Waveplates

Low (multiple) order waveplate is designed to give a retardance of several full waves, plus the desired fraction. This result in a single, physically robust component with desired performance. However, even small changed in wavelength or temperature will result in significant changes in the desired fractional retardance. They are less expensive and find use in many applications where the increased sensitivities are not an important.

 Material

Quartz

 Wavelength Range

200~2300 nm,

 Dimension Tolerance

+/-0.1mm

 Surface Quality

20 / 10

 Parallelism

<1 arc Sec

 Retardation Tolerance

< λ/300

 Clear Aperture

>90%

 Damage Threshold

>500 MW/cm2

 Coating

AR coating

 Mount

Black Anodized Aluminium

Standard Wavelength:

355nm, 532nm, 632.8nnm, 780nm, 808nm, 850nnm, 980nm, 1064nm, 1310nm, 1480nm, 1550nm

Ordering Information

Quarter Waveplates P/N#

Half Waveplates P/N#

Diameter (∮mm )

ST-WPL410

ST-WPL210

10

ST-WPL412

ST-WPL212

12.7

ST-WPL415

ST-WPL215

15

ST-WPL420

ST-WPL220

20

ST-WPL425

ST-WPL225

25

ST-WPL430

ST-WPL230

30

2. Zero Order Waveplates

The zero order waveplate is designed to give a retardance of zero full waves, plus the desired fraction. Zero order waveplate shows better performance than multiple order waveplates. It has broad bandwidth and a lower sensitivity to temperature and wavelength changes. It should be considered for more critical applications.

 Material

Quartz

 Wavelength Range

200~2300 nm,

 Dimension Tolerance

+/-0.1mm

 Surface Quality

20 / 10

 Parallelism

<1 arc Sec

 Retardation Tolerance

< λ/500

 Clear Aperture

>90%

 Damage Threshold

>500 MW/cm2

 Coating

AR coating

 Mount

Black Anodized Aluminium

Standard Wavelength:

355nm, 532nm, 632.8nnm, 780nm, 808nm, 850nnm, 980nm, 1064nm, 1310nm, 1480nm, 1550nm

2.1 Zero Order Waveplates-Optically Contacted

This type of zero order waveplate is constructed of two low order waveplate with their axes crossed. Thus, the effect of the first plate is cancelled by the second, except for the residual difference between them.

Quarter Waveplates P/N #

Half Waveplates P/N #

Diameter (∮mm )

ST-WPO410

ST-WPO210

10

ST-WPO412

ST-WPO212

12.7

ST-WPO415

ST-WPO215

15

ST-WPO420

ST-WPO220

20

ST-WPO425

ST-WPO225

25

ST-WPO430

ST-WPO230

30

2.2 Zero Order Waveplates - Cemented by Epoxy

This type of zero order waveplate is constructed of two low order waveplate with their axes crossed. Thus, the effect of the first plate is cancelled by the second, except for the residual difference between them.

Quarter Waveplates P/N #

Half Waveplates P/N #

Diameter (∮mm )

ST-WPC410

ST-WPC210

10

ST-WPC412

ST-WPC212

12.7

ST-WPC415

ST-WPC215

15

ST-WPC420

ST-WPC220

20

ST-WPC425

ST-WPC225

25

ST-WPC430

ST-WPC230

30

2.3 Zero Order Waveplate - Air Spaced

Quarter Waveplates P/N #

Half Waveplates P/N #

Diameter (∮mm )

ST-WPA410

ST-WPA210

10

ST-WPA412

ST-WPA212

12.7

ST-WPA415

ST-WPA215

15

ST-WPA420

ST-WPA220

20

ST-WPA425

ST-WPA225

25

ST-WPA430

ST-WPA230

30

3. True Zero Order Waveplates

Material

Quartz

Wavelength Range

200~2300 nm,

Dimension Tolerance

+/-0.1mm

Surface Quality

20 / 1 0

Parallelism

<1 arc Sec 

Retardation Tolerance

< λ/300

Clear Aperture

>90%

Damage Threshold

>500 MW/cm2

Coating

AR coating

Mount

Black Anodized Aluminium

3.1 True Zero Order Waveplate-Single Plate 

This type of zero order waveplate is designed for high damage threshold applications (more than 1GW/cm2). As the plate is very thin, it's easy to break during operation.

Standard Wavelength:

1/2:1310nm, 1480nm, 1550nm

1/4:980nm, 1064nm,1310nm, 1480nm, 1550nm

Quarter Waveplates P/N #

HalfWaveplate P/N #

Diameter (∮mm )

ST-WPS410

ST-WPS210

10

ST-WPS412

ST-WPS212

12.7

ST-WPS415

ST-WPS215

15

ST-WPS420

ST-WPS220

20

ST-WPS425

ST-WPS225

25

ST-WPS430

ST-WPS230

30

3.2 True Zero Order Waveplate – Cemented

This type of zero order waveplate is constructed of a true zero order waveplate and a BK7 substrate. As the waveplate is very thin and easy to be damaged, the Bk7 plate's function is to strengthen the waveplate.

Standard wavelength:

532nm, 632.8nm, 780nm, 808nm,980nm, 1064nm,1310nm, 1480nm, 1550nm

Quarter Waveplates P/N #

HalfWaveplate P/N #

Diameter (∮mm )

ST-WPF410

ST-WPF210

10

ST-WPF412

ST-WPF212

12.7

ST-WPF415

ST-WPF215

15

ST-WPF420

ST-WPF220

20

ST-WPF425

ST-WPF225

25

ST-WPF430

ST-WPF230

30

4. Achromatic Waveplate

Achromatic waveplate is made from two different substrate materials such as crystal quartz and magnesium fluoride. For the single material waveplates the working wavelength is very limited because of the dispersion of the material. While two different kinds of material are used achromatic waveplate,  the dispersions of the birefringence are also different. Hence such waveplate is not sensitive to the wavelength change.

 Material

Quzrtz+MgF2

 Wavefront Distortion

350~2100 nm,

 Dimension Tolerance

+/-0.1mm

 Surface Quality

20 / 10

 Paralllelism

<1 arc Sec

 Retardation Tolerance

< λ/100

 Clear Aperture

>90%

 Damage Threshold

>500 MW/cm2

 Coating

AR Coating

 Mount

Black Anodized Aluminium

Standard Wavelength:

460-650nm, 550-750nm, 650-1000nm, 900-2100nm

Quarter Waveplates P/N#

Half Waveplates P/N#

Diameter (∮mm )

ST-WPB410

ST-WPB210

10

ST-WPB412

ST-WPB212

12.7

ST-WPB415

ST-WPB215

15

ST-WPB420

ST-WPB220

20

ST-WPB425

ST-WPB225

25

ST-WPB430

ST-WPB230

30

5. Dual Wavelength Waveplate

Dual wavelength waveplate is a multiple waveplate that provides a speciic retardance at two different wavelengths, it's particularly useful when used in conjunction with other polarization sensitive components to separate coaxial laser beams of different wavelength.

Material

Quartz

 Wavefront Distortion

350~2100 nm,

 Dimension Tolerance

+/-0.1mm

 Surface Quality

20 / 10

 Parallelism

<1 arc Sec

 Retardation Tolerance

< λ/100

 Clear Aperture

>90%

 Damage Threshold

>500 MW/cm2

 Coating

AR Coating

 Mount

Black Anodized Aluminium

 

Quarter Waveplates P/N#

Half Waveplates P/N#

Diameter (∮mm )

ST-WPD410

ST-WPD210

10

ST-WPD412

ST-WPD212

12.7

ST-WPD415

ST-WPD215

15

ST-WPD420

ST-WPD220

20

ST-WPD425

ST-WPD225

25

ST-WPD430

ST-WPD230

30

6. Polarization Rotator

Due to the rotation activity of natural quartz crystal, it also can be used as polarization rotators so that the plane of input linearly polarized beam will be rotated at special angle which is determined by the thickness of quartz crystal.

Material

Crystal Quartz 200-2500nm

Dimension Tolerance

±0.2mm

Rotation Accuracy

<5 arc minutes

Parallelism

<10 arc seconds

Wavefront Distortion

λ/4@632.8nm

Surface Quality

20/10 scratch and dig

Rotation

clockwise and counter-clockwise

Coating

AR coating available, R<0.25%@central wavelength

Retarders

1. High Speed Liquid Crystal Variable Retarder

Sintec Optronics newest liquid crystal (LC) product, the high speed LC variable retarder (HS LCVR) has a 10X speed improvement over our award winning standard LCVR.  The sub-millisecond speeds are achieved without the 50/50 duty cycle drive scheme required by our ferroelectric liquid crystal components, but are nearly as fast.  The new LCVR uses nematic liquid crystal materials to electrically control polarization and provide tunable retardation by changing the effective birefringence of the material with applied voltage, thus altering the input polarized light to any chosen elliptical, linear or circular polarization. Our precision HS LCVR requires unique fabrication and assembly steps.  We construct these retarders using optically flat fused silica windows coated with our transparent conductive Indium Tin Oxide (ITO).  Our ITO coating is specially designed for maximum transmission from 400 – 700 nm. Liquid Crystal Variable Retarder response time depends on several parameters, including layer thickness, viscosity, temperature, variations in drive voltage and surface treatment.  Liquid crystal response time is proportional to the square of the layer thickness and therefore, the square of the total retardance.

Features:

Technical specifications:

Retarder Material

Nematic liquid crystal

Substrate Material

Optical quality synthetic fused silica

Wavelength Range

450 - 700 nm

Typical LC Rise Time (10 – 90%)

50 µs @ 532 nm

Typical LC Fall Time (90 – 10%)

500 µs @ 532 nm

Retardance

0 to λ/2

Transmitted Wavefront Distortion (at 632.8 nm)

≤ λ/4

Surface Quality

40-20 scratch-dig

Beam Deviation

≤ 2 arc min

Reflectance (per surface)

≤ 0.5% at normal incidence

Temperature Range

50°C

Recommended Safe Operating Limit

500 W/cm 2, CW; 300 mJ/cm2, 10 ns, visible

 

Diameter, D (in.)

Clear Aperture, CA (in.)

Thickness, t (in.)

Part Number

2

0.8

0.75

STM-HSLRC-200

2. Precision Achromatic Retarder

Sintec Optronics Precision Achromatic Retarders are designed to provide a nearly constant retardance over a broad wavelength region. Standard quarter- and half-wave devices are available for common wavelength regions in the visible and near infrared.

Features:

Technical specifications:

Retarder Material

Birefringent Polymer

Substrate Material

N-BK7

Standard Wavelengths

 

545

(485-630 operating range)

630

(555-730 operating range)

720

(630-835 operating range)

840

(735-985 operating range)

1060

(920-1240 operating range)

1400

(1200-1650 operating range)

Custom Wavelengths

400-1800 nm (specify)

Retardance

λ/4 and λ/2

Retardance Accuracy

≤ λ/100

Transmitted Wavefront Distortion

≤ λ/4

Surface Quality (scratch-dig)

40-20

Beam Deviation

≤ 1 arc-min

Reflectance (per surface)

≤ 0.5% at normal incidence

Threshold

500 W/cm2, CW; 600 mJ/cm2, 20 ns, visible; 4 J/cm2, 20 ns, 1064 nm

Operating Temperature

-20˚C to +50˚C

Mounted

Clear Aperture in. [mm]

Dimensions ± 0.005 in. [± 0.13 mm]

Thickness ± 0.020 in.[±0.51 mm]

Part Number

Quarter Wave

0.4 [10.2]

Ø1.00 [Ø25.4]

0.25 [6.35]

STM-AQM-050-λ

0.7 [17.8]

Ø1.00 [Ø25.4]

0.35 [8.9]

STM-AQM-100-λ

1.2 [30.5]

Ø2.00 [Ø50.8]

0.5 [12.7]

STM-AQM-200-λ

Half Wave

0.4 [10.2]

Ø0.50 [Ø12.7]

0.25 [6.4]

STM-AHM-050-λ

0.7 [17.8]

Ø1.00 [Ø25.4]

0.35 [8.9]

STM-AHM-100-λ

1.2 [30.5]

Ø2.00 [Ø50.8]

0.5 [12.7]

STM-AHM-200-λ

Unmounted

Clear Aperture in. [mm]

Dimensions =+ 0/-0.01 [+0/-0.25mm]

Thickness ± 0.020 in. [±0.51 mm]

Part Number

Quarter Wave

0.4 [10.2]

Ø0.50 [Ø12.7]

0.14 [3.6]

STM-AQ-050-λ

0.8 [20.3]

Ø1.00 [Ø25.4]

0.28 [7.1]

STM-AQ-100-λ

1.6 [40.6]

Ø2.00 [Ø50.5]

0.5 [12.7]

STM-AQ-200-λ

Half Wave

0.4 [10.2]

Ø0.50 [Ø12.7]

0.14 [3.6]

STM-AH-050-λ

0.8 [20.3]

Ø1.00 [Ø25.4]

0.28 [7.1]

STM-AH-100-λ

1.6 [40.6]

Ø2.00 [Ø50.5]

0.5 [12.7]

STM-AH-200-λ

3. Precision Superachromatic Retarder

Sintec Optronics is proud to introduce our new Precision Superachromatic Retarder - now with the broadest wavelength coverage of our entire retarder product line. These are available standard for two wavelength ranges - 420 to 1100 nm and 800 to 1700 nm - and in both quarter and half wave retardances. Custom devices are available for other wavelength ranges and retardances. Stock items are not anti-reflection coated due to the broad wavelength coverage but custom coatings can be provided. The Superachromatic Retarders contain carefully aligned birefringent polymer sheets laminated between precision polished optically flat N-BK7 windows. While assembly is quite similar to that of our Precision Retarders, optical transmission is slightly reduced because there are more polymer layers and there is no antireflection coating.These retarders are accurate to ± λ/50 over the entire wavelength range; we ship retardance measurements at more than 25 wavelengths accurate to ±0.001 waves with every Precision Superachromatic Retarder.

Features:

Technical specifications:

Retarder Material

Birefringent Polymer

Substrate Material

N-BK7

Wavelength Ranges

420-1100 nm, 800-1700 nm

TWD (1.00 in.)

λ/2 (P-V@ 633), [λ/8 (RMS @ 633)]

Retardance Accuracy

≤ λ/50

Acceptance Angle

±10°

Surface Quality

80-50 scratch-dig

Beam Deviation

≤ 2 arc-min

Temperature Range

10°C to 50°C (Operating)

Laser Damage Threshold

500 W/cm 2, CW; 300 mJ/cm2, 10ns, VIS; 500 mJ/cm2, 10ns, 1064 nm

 

Mounted

Diameter ±0.005 in. [±0.13 mm]

Clear Aperture in. [mm]

Thickness ±0.020 in. [±0.51 mm]

Wavelength Range [nm]

λ/4 Part Number

λ/2 Part Number

1.00 [25.4]

0.70 [17.8]

0.36 [9.1]

420 - 1100

STM-AQM-100S

STM-AHM-100S

1.00 [25.4]

0.70 [17.8]

0.36 [9.1]

800 - 1700

STM-AQM-100L

STM-AHM-100L

2.00 [50.8]

1.20 [30.5]

0.50 [12.7]

420 - 1100

STM-AQM-200S

STM-AHM-200S

2.00 [50.8]

1.20 [30.5]

0.50 [12.7]

800 - 1700

STM-AQM-200L

STM-AHM-100L

Unmounted

Diameter ±0.010 in. [±0.25 mm]

Clear Aperture in. [mm]

Thickness ±0.020 in. [±0.51 mm]

Wavelength Range [mm]

λ/4 Part Number

λ/2 Part Number

1.00 [25.4]

0.80 [20.3]

0.27 [6.9]

420 - 1100

STM-AQ-100S

STM-AH-100S

1.00 [25.4]

0.80 [20.3]

0.27 [6.9]

800 - 1700

STM-AQ -100L

STM-AH-100L

2.00 [50.8]

1.60 [40.6]

0.51 [13.0]

420 - 1100

STM-AQ-200S

STM-AH-200S

2.00 [50.8]

1.60 [40.6]

0.51 [13.0]

800 - 1700

STM-AQ-200L

STM-AH-200L

4. Precision Retarder

Sintec Optronics specializes in precision polymer retarders for the visible to near infrared region. Our Precision Retarders have the highest optical quality and tightest retardance tolerance of all polymer retarders. These true zero-order Precision Retarders consist of a birefringent polymer cemented between two precision polished, optically flat BK 7 windows. The retarder fast axis is conveniently marked for quick and easy reference. Precision Retarders are supplied with a broadband antireflection coating. Optical transmittance of a Precision Retarder is typically greater than 97%. The retardance at a wavelength λ that is different from the center wavelength λc is given by: δ ˜ δc(λc /λ) where δc is the retardance at λc. This relationship is very important when using sources which vary in wavelength from their nominal value. The 2 graphs show the retardance behavior as a function of relative wavelength for a quarter- and half-wave retarder, respectively. The Mueller calculus can be used to calculate the transmitted polarization state based upon the retardance differences from the ideal case. Since polymer retarders are true zero-order devices, they offer the significant advantage of improved angular performance. You can expect less than 1% retardance change over ±10° incidence angle. Sintec Optronics has developed precision ellipsometric techniques that can measure retardance to λ/1000.Our metrology for these measurements is the best in the industry. You can have absolute confidence that the calibration measurements supplied with your retarder are of the highest accuracy obtainable.

Features:

Technical specifications:

Retarder Material

Birefringent Polymer

Substrate Material

N-BK7

Stardard Wavelengths

532, 632.8, 670, 780, 850, 1064, and 1550 nm

Custom Wavelengths

400-1800 nm (specify)

Standard Retardances

λ/2 and λ/4

Retardance Accuracy

≤ λ/350

Retardance Change (at 30˚tilt)

≤ λ/40 and ≤ λ/80

Transmitted Wavefront Distortion

≤ λ/5

Surface Quality (scratch-dig)

40 -20

Beam Deviation

≤ 1 arc-min

Reflectance (per surface)

≤ 0.5% at normal incidence

Threshold

500 W/cm2, CW; 600 mJ/cm2, 20 ns, visible; 4 J/cm2, 20 ns, 1064 nm

Operating Temperature Range

-20˚C to -50˚C

 

Mounted

Clear Aperture in. [mm]

Dimensions ± 0.005 in. [ ± 0.13 mm]

Thickness ± 0.020 in. [ ±0.51 mm]

Part Number

Half Wave

0.4

Ø1.00

0.25

STM-NHM-050-λ

[10.2]

[Ø25.4]

[6.35]

0.7

Ø1.00

0.35

STM-NHM-100-λ

[17.8]

[Ø25.4]

[8.9]

1.2

Ø2.00

0.5

STM-NHM-200-λ

[30.5]

[Ø50.8]

[12.7]

Quarter Wave

0.4

Ø1.00

0.25

STM-NQM-050-λ

[10.2]

[Ø25.4]

[6.35]

0.7

Ø1.00

0.35

STM-NQM-100-λ

[17.8]

[Ø25.4]

[8.9]

1.2

Ø2.00

0.5

STM-NQM-200-λ

[30.5]

[Ø50.8]

[12.7]

Unmounted

Clear Aperture in. [mm]

Dimensions +0/-0.010 in. [+0/-0.25 mm]

Thickness ± 0.020 in. [± 0.51 mm]

Part Number

Half wave

0.4

Ø0.50

0.13

STM-NH-050-λ

[10.2]

[Ø12.70]

[3.3]

0.8

Ø1.00

0.26

STM-NH-100-λ

[20.3]

[Ø25.4]

[6.3]

1.6

Ø2.00

0.51

STM-NH-200-λ

[40.6]

[Ø50.8]

[13.0]

Quarter wave

0.4

Ø0.50

0.13

STM-NQ-050-λ

[10.2]

[Ø12.70]

[3.3]

0.8

Ø1.00

0.26

STM-NQ-100-λ

[20.3]

[Ø25.4]

[6.3]

1.6

Ø2.00

0.51

STM-NQ-200-λ

[40.6]

[Ø50.8]

[13.0]

5. Dual-Wavelength Retarder

Dual wavelength retarders can provide the same retardance at two wavelengths that are separated in wavelength by more than the span covered by an achromatic retarder. They can also provide different specified retardances at two different wavelengths. Traditionally these retarders have been made using crystal quartz and are multiorder retarders at both wavelengths. Our dual wavelength retarders use polymers instead. They are usually much lower order and consequently have a slower change in retardance with angle of incidence as shown in the graph. On average the order is about 20% of that for a comparable quartz dual wavelength retarder. Call for a quote on a custom coating on these normally uncoated retarders. The retardance tolerance is ±0.01waves at both wavelengths. Many custom combinations not listed in the catalog are available. Please call for a quote on your custom requirement. Standard unmounted sizes are 0.50 inches and 1.00 inches.

Features:

Technical specifications:

Retarder Material

Birefringent Polymer

Substrate Material

N-BK7

Retardance Accuracy

≤ λ/100 at both wavelengths

Transmitted Wavefront Distortion

≤ λ/4

Beam Deviation

≤ 1 arc-min

Reflectance (per surface)

~ 4% at normal incidence

Storage Temperature

design dependent

Operating Temperature

design dependent

Thickness in. [mm]

Dimensions in. [mm]

Part Number

0.14 [3.6]

0.50  [Ø12.7]

STM-D R1 R2-d-λ1/λ2

0.27 [6.9]

1.00  [Ø25.4]

STM-D R1 R2-d-λ1/λ2

6. Liquid Crystal Variable Retarder

To prevent ionic buildup, which can damage the liquid crystal layer, liquid crystal devices should be electrically driven with an AC waveform with little to no DC component. We require a 2 kHz square wave of adjustable amplitude for controlling our Liquid Crystal Variable Retarders (LCVRs). Our Basic Controller and Four Channel Interface ensure these drive requirements are met. A temperature sensing and control option can be added to our LCVRs for accurate control of the operating temperature. A temperature sensor is attached directly to the LCVR substrate, outside its clear aperture and a heater is attached to the LCVR housing. This provides active heating and passive cooling of the liquid crystal device.

Features:

Technical specifications:

Retarder Material

Nematic liquid crystal

Substrate Material

Optical quality synthetic fused silica

Wavelength Range

450-1800 nm (specify)

Retardance Range

Without compensator

~30 nm to λ/2

With compensator

0 to λ/2

Transmitted Wavefront Distortion

≤ λ/4

Surface Quality (scratch-dig)

40-20

Beam Deviation

≤ 2 arc min

Reflectance (per surface)

≤ 0.5% at normal incidence

Temperature

0˚C to +50˚C

Laser Damage Threshold

500 W/cm2, CW; 300 mJ/cm2, 10 ns, visible

Clear Aperture in. [mm]

Diameter ± 0.005 in. [± 0.13 mm]

Thickness in. [mm]

Part Number

Without Attached Compensator (30 nm to λ/2)

0.37

Ø1.00

1.23

STM-LVR-100

[9.4]

[Ø25.4]

[31.2]

0.7

Ø2.00

0.75

STM-LVR-200

[17.8]

[Ø50.8]

[19.1]

1.6

Ø3.00

1

STM-LVR-300

[40.6]

[Ø76.2]

[25.4]

With Attached Compensator (0 nm to λ/2)

0.37

Ø1.00

1.23

STM-LRC-100

[9.4]

[Ø25.4]

[31.2]

0.7

Ø2.00

0.75

STM-LRC-200

[17.8]

[Ø50.8]

[19.1]

1.6

Ø3.00

1

STM-LRC-300

[40.6]

[Ø76.2]

[25.4]

7. Wide Field Retarder

Sintec Optronics now offers Wide Field Retarders, the latest innovation in near zero-order polymer retarder technology. At their design wavelength, Wide Field Retarders provide a consistent retardance value over a wide acceptance angle, out to 30° or more. Standard quarter- and half-wave designs are available for common wavelengths in the visible to near infrared region. The graphs show the Wide Field Retarder performance as a function of incidence angle for the both half-wave and quarter-wave designs. Multilayer broadband antireflection (BBAR) coatings are included as standard. Note that BBAR coating performance varies with incidence angle; these coatings perform best at (or near) normal incidence. As with all Sintec Optronics retarders, the fast axis is conveniently marked. Custom retardance values are available for wavelengths from 400-1800 nm. Please call for application assistance or to request a custom quotation.

Features:

Technical specifications:

Retarder Material

Birefringent Polymer

Substrate Material

N-BK7

Standard Wavelengths

532, 632.8, 670, 780, 850, 1064, and 1550 nm

Custom Wavelengths

400-1800nm (specify)

Retardance

λ/2 and λ/4

Retardance Accuracy

≤ λ/250 at normal incidence at the center of the part

Retardance Change (at 30˚tilt)

Half-wave

≤ λ/100

Quarter-wave

≤ λ/200

Transmitted Wavefront Distortion

≤ λ/2

Surface Quality (scratch-dig)

60-40

Beam Deviation

≤ 1 arc-min

Reflectance (per surface)

At normal incidence

≤ 0.5%

At 30˚ incidence

≤ 1.0%

Operating Temperature

0˚C to 40˚C

8. Polymer Film Retarder

Sintec Optronics is pleased to present our Bare Polymer Retarder film. Our proprietary polymer film provides high retardance accuracy in a cost effective product which can be provided in almost any configuration and quantity. The temperature dependence of the nominal retardance is approximately 0.01%/°C, which provides a very stable and versatile polarization solution. Manufactured in-house for wavelengths between 400 and 1800nm, this retarder is ideal for applications requiring a high precision, thin and cost effective solution. We are also able to tune the retardance to your Angle of Incidence to optimize performance. AR coatings are available on a special order basis. Standard shapes and retardance values are available when quick turn-around is needed. We can also accommodate requests for custom shapes, sizes (up to 4 inches) and retardance values.

Features:

Technical specifications:

Substrate Material

Polymer Film

Thickness

0.005 inch (127 µm), nominal

Wavelength Range

400-1800 nm

Retardance Ranges

Single Layer: 20-1600 nm

Double Layer: 1600-3000 nm

Reflectance

~4% per surface

Retardance Variation

≤ 2%/in.

Retardance Accuracy

± λ/300

Acceptance Angle

± 6˚

Transmitted Wavefront Distortion

≤ 2λ (P-V @ 633)

[≤ λ/2 (RMS @ 633)]

Surface Quality

80-50 scratch-dig

Beam Deviation

≤ 30 arc-sec

Operating Temperature

-40˚C to +60˚ C

 

Round

Clear Aperture (in.)

Thickness  (in.)

Dimensions (in.)

Part Number

0.45

0.01

Ø0.50

λ/4 Wave: STM-BQ-050-λ

λ/2 Wave: STM-BH-050-λ

0.9

0.01

Ø1.00

λ/4 Wave: STM-BQ-100-λ

λ/2 Wave: STM-BH-100-λ

1.35

0.01

Ø1.50

λ/4 Wave: STM-BQ-150-λ

λ/2 Wave: STM-BH-150-λ

1.8

0.01

Ø2.00

λ/4 Wave: STM-BQ-200-λ

λ/2 Wave: STM-BH-200-λ

Square

0.45 x 0.45

0.01

0.50 x 0.50

λ/4 Wave: STM-BQ-050x050-λ

λ/2 Wave: STM-BH-050x050-λ

0.90 x 0.90

0.01

1.00 x 1.00

λ/4 Wave: STM-BQ-100x100-λ

λ/2 Wave: STM-BH-100x100-λ

1.35 x 1.35

0.01

1.50 x 1.50

λ/4 Wave: STM-BQ-150x150-λ

λ/2 Wave: STM-BH-150x150-λ

1.80 x 1.80

0.01

2.00 x 2.00

λ/4 Wave: STM-BQ-200x200-λ

λ/2 Wave: STM-BH-200x200-λ

9. Raptor Applied Polymer Retarder

Retarder Applied Polymer (RAPtor) parts are manufactured using  a proprietary high birefringent polymer. These retarders are true  zero order with a typical film thickness less than 10 microns. The material can be added to customer provided windows and even mildly curved substrates to produce truly custom solutions. These retarders were originally designed for use in astronomy but have applications wherever a true zero order waveplate would be used. Sintec Optronics can apply these retarders to  substrates from 10 mm to 100 mm diameter (and even larger on a custom basis).

Features:

Technical specifications:

Retarder Material

High Birefringence Polymer

Retarder Thickness

< 10 µm**

Substrate Material

1.1 mm Fused Silica

Wavelength Range/Retardance

400 - 1064 nm ( λ/2 )

400 - 1550 nm ( λ/4 )

Retardance Accuracy

< ± λ/100

Retardance Uniformity

< λ/100 [<5 nm]

Clear Aperture

80%

Reflectivity

≤ 0.5%

Transmitted Wavefront Distortion

≤ λ/2 (P-V @ 633 nm)

[≤ λ/8 (RMS @ 633 nm)]

Beam Deviation

≤ 5 arc sec

Surface Quality

80-50 scratch-dig

Operating Temperature

-20 °C to 80 °C

Storage Temperature

-40 °C to 80 °C

Custom Design

Wavelength Range

350-3300 nm

Retardance Accuracy

< ± λ/200

Dimensions

up to 150 mm diameter

Fast Axis Datum/Orientation

Customer specified

Substrate Material/Geometry/Thickness

Customer specified

Clear Aperture in. [mm]

Diameter in. [mm]

Part Number

Ø0.9 in. [22.9 mm]

Ø1.00 in. [25.4 mm]

STM-PQ-100-λ , STM-PPH-100-λ

Ø1.8 in. [45.7 mm]

Ø2.00 in. [50.8 mm]

STM-PPQ-200-λ , STM-PPH-200-λ

10. Large Aperture Retarder

For many astronomical, aerospace, and defense projects, large aperture retarders are required. Sintec Optronics has over thirty-five years of retarder manufacturing expertise and is able to manufacture from a wide variety of materials to facilitate high or low power applications. Waveplates up to 150 mm diameter are available. Some materials allow retarders to be used over different wavelengths from the ultraviolet, through the visible and into the near infrared. Sintec Optronics uses proprietary methods to ensure the best spatial uniformity of its polymer and crystalline retarders. These retarders have a spatial uniformity of better than two percent across the clear aperture and with the correct substrates, can have a wavefront distortion that is on par with Meadowlark Optics’ Precision Retarders.

Features:

Technical specifications:

Retarder (Bifringent) Material Options

Polymer

Crystalline Quartz

Magnesium Fluoride

Sapphire

Liquid Crystal†

Wavelength

300-2500 nm (specify)

Retardances

0 to 100s of λ

Retardance Accuracy

Center

≤ λ/100 to ≤ λ/350

Spatial Uniformity

≤ λ/10 to ≤ λ/100

Transmitted Wavefront Distortion

≤ λ to ≤ λ/5 (P-V @ 633)

[ λ/4 to λ/20 (RMS @ 633)]

Surface Quality

40-20 scratch-dig to 80-50 scratch-dig

Outside Dimensions

up to 150 mm

11. Bi-Crystalline Achromatic Retarder

Sintec Optronics is pleased to offer a selection of quarter- and half-wave achromatic retarders that span the UV, visible, near IR and IR portions of the spectrum. Two multi-order crystalline retarders, one made of crystalline quartz and the other magnesium fluoride, are combined in a subtractive mode to give an effective zero-order waveplate. By a careful choice of waveplate thicknesses, retardance dispersion is balanced to give a nearly constant retardance (in waves) over a broad range of wavelengths. The useable wavelength range is defined to give a retardance value within λ/100 of the nominal value. Custom designs with larger achromatic ranges or deeper UV wavelengths are available on request. Bi-Crystalline Achromats are similar in achromatic performance to our polymer achromats in the visible, but they excel in the IR. They have higher power handling capability than our polymer achromats and can with stand higher storage temperatures. Their field of view is narrow compared to polymer achromats. Typically, they cannot be expected to meet their retardance accuracy for rays whose incidence angles exceed 1.5°. If you must have the performance of a Bi-Crystalline Achromat and a large field of view, call us. We have a proprietary design that can be your polarization solution.

Features:

Technical specifications:

Retarder Material

Quartz & Magnesium Fluoride

Retardance Accuracy

λ/4 or λ/2

Temp. Coefficient of Retardance

λ/500 per ˚C

Standard Wavelengths - Quarter Wave

Ultraviolet

395-465 nm

Visible

475-590 nm

Near Infrared

600-900 nm

Infrared

690-2050 nm

Standard Wavelengths - Half Wave

Ultraviolet

412-475 nm

Visible

500-650 nm

Near Infrared

600-840 nm

Infrared

1190-1660 nm

Transmitted Wavefront Distortion

≤ λ/4

Surface Quality (scratch-dig)

40-20

Beam Deviation

≤ 1 arc-min

Reflectance (per surface)

≤ 0.5% at normal incidence

Storage Temperature

-40˚C to +75˚C

Threshold

2 J/cm2, 10 ns, 1064 nm

 

Mounted

Clear Aperture in. [mm]

Diameter in. [mm]

Part Number

Half Wave

   

0.4

Ø1.00

STM-CHM-050

[10.2]

[Ø25.4]

Quarter Wave

0.4

Ø1.00

STM-CQM-050

[10.2]

[Ø25.4]

Unmounted

Clear Aperture in. [mm]

Diameter in. [mm]

Part Number

Half Wave

0.4

Ø0.50

STM-CH-050

[10.2]

[Ø12.7]

Quarter Wave

0.4

Ø0.50

STM-CQ-050

[10.2]

[Ø12.7]

 PolarizserWaveplate RetarderLiquid Crystal DeviceSpatial Light Modulator, Applications of SLM

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