Rochon Polarizer
Rochon Prisms split an arbitrarily polarized input beam into two orthogonally polarized output beams. The ordinary ray remains on the same optical axis as the input beam, while the extraordinary ray deviates by an angle, which depends on the wavelength of the light and the material of the prism (see the Beam Deviation graphs in the table to the right). The output beams have a high polarization extinction ratio of >10 000:1 for the MgF2 prism and >100 000:1 for the a-BBO prism.
Feature：
Separate Unpolarized Light into Two Orthogonally Polarized Outputs
High Extinction Ratio for Each Output
Wide Wavelength Range
Low Power Application
Specifications：
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Item
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MgF2 GRP
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a-BBO GRP
|
Quartz GRP
|
YVO4 GRP
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Wavelength Range
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130-7000nm
|
190-3500nm
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200-2300nm
|
500-4000nm
|
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Extinction Ratio
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<5*10-5
|
<5*10-6
|
<5*10-5
|
<5*10-6
|
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Surface Quality
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20/10 Scratch/Dig
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Beam Deviation
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< 3 arc minutes
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Wavefront Distortion
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<λ/4@633nm
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Damage Threshold
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>200MW/cm2@1064nm, 20ns, 20Hz
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Coating
|
P Coating or AR Coating
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Mount
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Black Anodized Aluminium
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Standard Products:
a-BBO Rochon Polarizer：
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Part No
|
Wavelength Range
|
Extinction Ratio
|
Angular Field
|
CA(mm)
|
Polarizer Size(mm)
|
Holder(mm)
|
|
190-3500nm
|
<5*10-6
|
>8°
|
φ6.0
|
6.0*6.0*7.0
|
φ15.0*15.0
|
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GRP1010
|
φ10.0
|
10.0*10.0*11.0
|
φ25.4*19.0
|
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GRP1015
|
φ15.0
|
15.0*15.0*16.0
|
φ30.0*23.0
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GRP1020
|
φ20.0
|
20.0*20.0*21.0
|
φ38.0*29.0
|
YVO4 Rochon Polarizer：
|
Part No
|
Wavelength Range
|
Extinction Ratio
|
Angular Field
|
CA(mm)
|
Polarizer Size(mm)
|
Holder(mm)
|
|
GRP3006
|
500-4000nm
|
<5*10-6
|
>10°
|
φ6.0
|
6.0*6.0*6.1
|
φ15.0*15.0
|
|
GRP3010
|
φ10.0
|
10.0*10.0*9.5
|
φ25.4*19.0
|
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GRP3015
|
φ15.0
|
15.0*15.0*13.7
|
φ30.0*23.0
|
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GRP3020
|
φ20.0
|
20.0*20.0*18.0
|
φ38.0*29.0
|
Quartz Rochon Polarizer：
|
Part No
|
Wavelength Range
|
Extinction Ratio
|
Angular Field
|
CA(mm)
|
Polarizer Size(mm)
|
Holder(mm)
|
|
GRP4006
|
200-2300nm
|
<5*10-5
|
>1°
|
φ6.0
|
6.0*6.0*12.0
|
φ15.0*20.0
|
|
GRP4010
|
φ10.0
|
10.0*10.0*20.0
|
φ25.4*28.0
|
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GRP4015
|
φ15.0
|
15.0*15*30.0
|
φ30.0*38.0
|
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GRP4020
|
φ20.0
|
20.0*20.0*40.0
|
φ38.0*48.0
|
MgF2 Rochon Polarizer：
|
Part No
|
Wavelength Range
|
Extinction Ratio
|
Angular Field
|
CA(mm)
|
Polarizer Size(mm)
|
Holder(mm)
|
|
GRP5006
|
350-2300nm
|
<5*10-5
|
>1°
|
φ6.0
|
6.0*6.0*12.0
|
φ15.0*20.0
|
|
GRP5010
|
φ10.0
|
10.0*10.0*20.0
|
φ25.4*28.0
|
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|
GRP5015
|
φ15.0
|
15.0*15.0*30.0
|
φ30.0*38.0
|
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|
GRP5020
|
φ20.0
|
20.0*20.0*40.0
|
φ38.0*48.0
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