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Rochon Polarizer

Rochon PolarizerRochon polarizer is made of two birefringent prisms by optically contacted or cemented together. The first prism, cut parallel to the optic axis, receives the light. The second prism, with the optic axis at right angles, transmits the ordinary ray without deviation but the extraordinary ray is deflected. Rochon polarizer can be used to produce plane-polarized light and it can also be used with ultraviolet light. Any separation angle can be designed for specific wavelength upon the requirement.


Rochon polarizer Specifications:

 

 Material

 MgF2, a-BBO, Calcite, YVO4, Quartz

 Wavelength Range

 MgF2:130-4000nm; a-BBO: 190-3500nm; Quartz:200-2300nm;

 Calcite: 350-2300nm; YVO4: 500-4000nm

 Extinction Ratio

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

 MgF2:<10-4 ; 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. MgF2 Rochon Polarizer


Part No.

Aperture φa (mm)

O.D.

φd(mm)

L (mm)

Wavelength Range

Extinction Ratio

Separation

Angle

RHM06

6.0

15.0

14.0

130-7000nm

< 10-4

1°- 2 °,

1°@980nm

RHM08

8.0

25.4

18.0

RHM10

10.0

25.4

18.0

RHM15

15.0

30.0

38.0

RHM20

20.0

38.0

48.0


2. a-BBO Rochon Polarizer

 

Part No.

Aperture φa (mm)

O.D.

φd(mm)

L (mm)

Wavelength Range

Extinction Ratio

Separation

Angle

RHB06

6.0

15.0

15.0

190-3500nm

<5x10-6

8.0°-14°,

8°@800nm

RHB08

8.0

25.4

17.0

RHB10

10.0

25.4

19.0

RHB15

15.0

30.0

23.0

RHB20

20.0

38.0

29.0


3. YVO4 Rochon Polarizer

 

Part No.

Aperture φa (mm)

O.D.

φd(mm)

L (mm)

Wavelength Range

Extinction Ratio

Separation

Angle

RHY06

6.0

15.0

15.0

500-4000nm

<5x10-6

9.8°-13.0°,

10°@1550nm

RHY08

8.0

25.4

17.0

RHY10

10.0

25.4

19.0

RHY15

15.0

30.0

23.0

RHY20

20.0

38.0

25.0


4. Quartz Rochon Polarizer

 

Part No.

Aperture φa (mm)

O.D.

φd(mm)

L (mm)

Wavelength Range

Extinction Ratio

Separation

Angle

RHQ06

6.0

15.0

20.0

200-2300nm

<5x10-5

1.0°-1.5 °,
1°@1064nm

RHQ08

8.0

25.4

24.0

RHQ10

10.0

25.4

28.0

RHQ15

15.0

30.0

38.0

RHQ20

20.0

38.0

48.0

 

Birefringent Crystal Material Data


 

    a-BBO CrystalYVO4 CrystalCalcite CrystalQuartz CrystalMgF2 Crystal