Thin Film Plate Polarizers


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Product Catalog 2017

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Dualband Brewster Type Thin Film Polarizers

Dualband Brewster Type Thin Film Polarizers
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Material UVFS
Diameter/dimensional tolerances +0/-0.1 mm
Thickness tolerance ±0.1 mm
Clear Aperture >90%
Surface quality 20-10 S-D
Transmitted wavefront distortion (TWD) <λ/10 @ 632.8 nm
Parallelism error <30 arcsec
Extinction ratio Tp/Ts >200:1
Typical transmission Tp > 95%
Typical reflection Rs > 99.5%
Angle of incidence Brewster angle
Laser damage threshold reports www.altechna.com/lidt
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Attention! You can customise this product to your needs.
Dualband Brewster Thin Film polarizers are designed for use with two collinear beams of different wavelengths, while maintaining the performance of regular brewster polarizer. 
They have high damage threshold reaching 10 J/cm² @ 1064 nm for 8 ns. Brewster polarizers are used as an alternative to Glan-Taylor laser polarizing prisms or cube polarizing beamsplitters. Typically, BK7 or UVFS dielectric coated Brewster Type Thin film polarizers separate the s- and p-polarization components of high energy laser beams and are intended for intra and extra cavity usage. 
Typical polarization ratio Tp/Ts is 200:1 and it is achieved at 56 ° AOI (Brewster angle). For optimal transmission Brewster Type Thin Film Polarizer should be mounted in an appropriate holder for angular adjustment. 
Custom dimensions thin film polarizers are available by request.
varna Works at two wavelengths
varna Efficiently separates S and P polarization components
varna Optimised for popular laser wavelengths and harmonics

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Dimensions, mm Wavelength, nm Delivery Product ID Price Action
Ø25.4 x 3 1030 + 515 From stock 2-DBFP-1030-515-0254 455 $

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Choose from 1 Dualband Brewster Type Thin Film Polarizers