These are thin film Polarizers constructed as a cube. Thin film polarizers utilize the polarization which occurs on reflection from a plane surface. By combining a large number of such surfaces in a stack it is possible to obtain useful extinction ratios.The s-polarization is more than 99% reflected while the p-polarization can be suppressed in the reflected beam and become 95% transmitted. Thin film Polarizers can be optimized for a particular wavelength to give superior performance for laser applications.
Factory Standard
- Material: Schott, Ohara, CDGM glass, Corning fused silica, JGS1, JGS2
- Surface flatness: l/4 Lambda
- Dimensions: +0.1 mm
- Beam deviation: 1 arcmin
- Asymmetry: 1°
- Surface quality: 40-20
- Coating: Narrowband Anti-Reflection coating on faces
- Extinction ratio: Ts<1×10-2 Rp<2×10-2
- Damage threshold: <100mJ/cm2 in 10ns @1064nm
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