Rochon Polarizer, Wollaston

Wollaston Polarizers Rochon Polarizers 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 at 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°at 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° at 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°at 1550nm Note:Custom designs for other sizes and coatings are also available upon request United photonics technology

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