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Thin Film Polarizers

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      Thin Film Polarizers
      Description
      Thin film polarizers are used for high energy applications. They have high damage threshold reaching 10 J/cm² @ 1064 nm for 8 ns. Thin film polarizers are used as an alternative to Glan-Taylor laser polarizing prisms or cube polarizing beamsplitters. Typically, BK7 or UVFS dielectric coated 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 Thin film polarizer should be mounted in an appropriate holder for angular adjustment.
      Standard specifications
      Material BK7, UVFS
      Diameter/dimension tolerance +0/-0.1 mm
      Thickness tolerance ±0.1 mm
      Clear aperture >90 %
      Surface quality 20-10 S-D
      Transmitted wavefront distortion <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
      Features
      • Efficiently separates the s- and p- polarization components
      • Optimised for popular laser wavelengths
      • Many Thin film polarizers are available from stock with fast delivery!
      Miscellaneous
      • Custom design Thin film polarizers are available in small and mass production quantities
      • Mass production capabilities: 3’000 pieces per month
      • Thin film polarizers with dimensions up to 200x150 mm are available
      Catalog Items
      Product ID Dimensions, mm Substrate material Wavelength, nm
      2-BFP-0266-0254 Ø25.4x3 UVFS 266
      2-BFP-0266-2040 20x40x5
      2-BFP-0343-0254 Ø25.4x3 343
      2-BFP-0343-2040 20x40x5
      2-BFP-0355-0254 Ø25.4x3 355
      2-BFP-0355-2040 20x40x5
      2-BFP-0400-0254 Ø25.4x3 400
      2-BFP-0400-2040 20x40x5
      2-BFP-0515-0254 Ø25.4x3 515
      2-BFP-0515-2040 20x40x5
      2-BFP-0532-0254 Ø25.4x3 532
      2-BFP-0532-2040 20x40x5
      2-BFP-0780-0254 Ø25.4x3 780
      2-BFP-0780-2040 20x40x5
      2-BFP-0800-A-0254 Ø25.4x3 780-820
      (centered @ 800nm)
      2-BFP-0800-A-2040 20x40x5
      2-BFP-0800-0254 Ø25.4x3 795-805
      (centered @ 800nm)
      2-BFP-0800-2040 20x40x5
      2-BFP-1030-0254 Ø25.4x3 UVFS 1020-1040
      (centered @ 1030nm)
      2-BFP-1030-2040 20x40x5
      2-BFP-1064-0254 Ø25.4x3 1064
      2-BFP-1064-2040 20x40x5
      2-BFP-1550-0254 Ø25.4x3 BK7 1550
      2-BFP-1550-2040 20x40x5
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