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Wollaston Polarizer

Wollaston PolarizerWollaston polarizer offers the widest deviation angle of beam-displacing polarizers. This polarizer is made of two birefringent prisms cemented together. Both output beams are deviated symmetrically from the input beam axis. Since the output deviations are chromatic, Wollaston polarizers have been used in spectrometers as well as in polarization analyzers.


Wollaston polarizer Specifications:

 

 Material

 a-BBO, Calcite, YVO4

 Wavelength Range

 a-BBO: 200-3500nm; Calcite: 350-2300nm; YVO4: 500-4000nm

 Extinction Ratio

 Calcite:<5x10-5 ; a -BBO:<5x10-6 ; YVO4:<5x10-6 ; Quartz:<5x10-5

 Surface Quality

 20/10 scratch/dig

 Beam Deviation

 < 3 arc minutes

 Wavefront Distortion

 λ/4@632.8nm

 Damage Threshold

 >500MW/cm2

 Coating

 Single Layer MgF2

 Mount

 Black Anodized Aluminium

 

Standard Products:

1. a-BBO Wollaston Polarizer

 

Part No.

Aperture φa (mm)

O.D.

φd(mm)

L (mm)

Wavelength Range

Extinction Ratio

Separation

Angle

WSB06

6.0

15.0

15.0

190-3500nm

<5x10-6

15°- 17 °,

16°@800nm

WSB08

8.0

25.4

17.0

WSB10

10.0

25.4

19.0

WSB15

15.0

30.0

23.0

WSB20

20.0

38.0

29.0

 

2. Calcite Wollaston Polarizer

 

Part No.

Aperture φa (mm)

O.D.

φd(mm)

L (mm)

Wavelength Range

Extinction Ratio

Separation

Angle

WSC06

6.0

15.0

15.0

350-2300nm

<5x10-5

16.7°- 22.5 °,

19°@980nm

WSC08

8.0

25.4

17.0

WSC10

10.0

25.4

19.0

WSC15

15.0

30.0

23.0

WSC20

20.0

38.0

29.0

 

3. YVO4 Wollaston Polarizer

  

Part No.

Aperture φa (mm)

O.D. φd(mm)

L (mm)

Wavelength Range

Extinction Ratio

Separation Angle

WSY06

6

15

15

500-4000nm

<5x10-6

19.6°-23.3°,

20°@1550nm

WSY08

8

25.4

17

WSY10

10

25.4

19

WSY15

15

30

23

WSY20

20

38

29

 

4. Quartz Wollaston Polarizer

 

Part No.

Aperture φa (mm)

O.D.

φd(mm)

L (mm)

Wavelength Range

Extinction Ratio

Separation

Angle

WSQ06

6.0

15.0

20.0

200-2300nm

<5x10-5

2°-3 °,
2°@1064nm

WSQ08

8.0

25.4

24.0

WSQ10

10.0

25.4

28.0

WSQ15

15.0

30.0

38.0

WSQ20

20.0

38.0

48.0


Birefringent Crystal Material Data


 

    a-BBO CrystalYVO4 CrystalCalcite CrystalQuartz CrystalMgF2 Crystal