Rochon Polarizer / Wollaston Polarizer

Rochon Polarizers 罗雄棱镜 Rochon polarizer is one of the earliest designs, which is made of two birefringent material prisms cemented together. Both ordinary and extraordinary beams propagate collinearly down the optic axis in the first prism under the ordinary refractive index. Upon entering the second prism the ordinary beam experiences the same refractive index and continues undeviated. The extra-ordinary beam, however, now has a lower refractive index and is refracted at the interface. The angle of refraction is further increased at the birefringent material/air exit surface. Any separation angle can be designed for specific wavelength upon the requirement. The separation angle of standard products vs wavelength is shown in the plot below. Specifications: Material:a-BBO, Quartz,YVO4,MgF2 Wavelength Range:a-BBO:190-3500nm, Quartz:200-2300 nm ;YVO4:400-4000nm Extinction Ratio:a-BBO:<5x10-6 ; Quartz:<5x10-5 ;YVO4:<5x10-6 Parallelism:<1 arc Min Surface Quality: 20/10 Beam Deviation:< 3 arc minutes Wavefornt Distortion:λ/4@632.8nm Damage Threshold:>500 MW/cm2 Coating:Single MgF2 Mount:Black Anodized Aluminium Standard Products 1. a-BBO Rochon Polarizer Part No.    Extinction Ratio    Separation Angle(°) C.A. fa(mm)  O.D.    fd(mm)  L ±0.1(mm)  RHP5006  <5x10-68.  0°-14°  8°@ 800nm 2.Quartz Rochon Polarizer Part No.  Extinction Ratio  Separation Angle(°)  C.A. fa(mm) O.D.    fd(mm)  L ±0.1(mm) RHP8006    <4x10-6    1.0°-1.5°  1°@980nm 3.YVO4 Rochon Polarizer Part No.  Extinction Ratio    Separation Angle(°) C.A. fa(mm)  O.D.    fd(mm)  L ±0.1(mm) RHP9006    <5x10-6    9.8°-13.0°    10°@ 1550nm Note：Custom designs for other sizes and coatings are also available  upon request Wollaston Polarizers 沃拉斯通棱镜 Wollaston polarizer is made of two birefringent material prisms that are cemented together. The deviations of the ordinary and extraordinary beams are nearly symmetrical about the input beam axis, so that the Wollaston polarizing beam splitter has approximately twice the deviation of the Rochon. The separation angle exhibits chromatic dispersion, as shown in the blow. Any separation angle can be designed upon the requirement. The separation angle of standard products vs wavelength is shown in the plot below. Separation Angular of Standard Products vs Wavelength a -BBO, 190-3500nm Calcite:350-2300nm Quartz, 200-3300nm YVO4, 400-4000nm Specifications: Material: a-BBO , Calcite , YVO4 , Quartz Wavelength Range: a-BBO:190-3500 nm,  Calcite:350-2300 nm, YVO4:400-5000 nm,  Quartz:200-2300 nm Extinction Ratio: Calcite,Quartz:<5x10-5;  a-BBO , YVO4:<5x10-6 Parallelism:<1 arc Min Surface Quality:20/10 Beam Deviation:< 3 arc minutes Wavefornt Distortion:λ/4@632.8nm Damage Threshold:>500 MW/cm2 Coating: Single MgF2 Mount:Black Anodized Aluminium Standard Products 1. a-BBO Wollaston Polarizer Part No. Extinction Ratio  Separation Angle(°)  C.A. fa(mm) O.D.  fd(mm)  L ±0.1(mm) WLP50**  <5x10-6  15°-27°  16°@ 800nm 2. Calcite Wollaston Polarizer Part No.  Extinction Ratio Separation Angle(°)  C.A.  fa(mm)  O.D.  fd(mm) L ±0.1(mm) WLP60**    <5x10-5  16.7° - 22.5°  19°@980nm 3. Quartz Wollaston Polarizer Part No. Extinction Ratio    Separation Angle(°)  C.A. fa(mm)  O.D.  fd(mm) L ±0.1(mm) WLP80**    <5x10-5    2°- 3°    2°@ 1064nm 4. YVO4 Wollaston Polarizer Part No.  Extinction Ratio    Separation Angle(°) C.A.    fa(mm)  O.D.  fd(mm)  L ±0.1(mm) WLP90**  <5x10-6  19.6°-23.3°  20°@ 1550nm Note：Custom designs for other sizes and coatings are also available  upon request  United Photonics Technology