Non-Polarizing Plate Beamsplitters
Thorlabs offers a wide variety of plate beamsplitters: UV Fused Silica (250 - 1700 nm), IR Fused Silica (900 - 2600 nm), Calcium Fluoride (1 - 8 µm), and Zinc Selenide (1 - 14 µm), covering the UV-MIR wavelength range. UV fused silica beamsplitter compensation plates are also available. We also offer beamsplitters for use with Nd:YAG wavelengths (1064 nm and 532 nm).
UV Fused Silica Broadband Plate Beamsplitters (Coating: 250 - 450 nm)
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Features
  • Beamsplitter Coating on Front Surface: 250 - 450 nm
  • Optimized for 50:50 Beamsplitting for a 45° Angle of Incidence (AOI)
  • Antireflection (AR) Coating on Back Surface: 250 - 450 nm
  • Ø1/2", Ø1", 25 mm x 36 mm, and Ø2" Versions Available
  • UV Fused Silica Substrate (Transmission Curve)
  • 30 arcmin Wedged Back Surface on Round Beamsplitters Minimizes Ghosting
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UV Fused Silica Broadband Plate Beamsplitters (Coating: 350 - 1100 nm)
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Features
  • Beamsplitter Coating on Front Surface: 350 - 1100 nm
  • Optimized for 50:50 Beamsplitting for a 45° Angle of Incidence (AOI)
  • Antireflection (AR) Coating on Back Surface: 350 - 1100 nm
  • Ø1/2", Ø1", 25 mm x 36 mm, and Ø2" Versions Available
  • UV Fused Silica Substrate (Transmission Curve)
  • 30 arcmin Wedged Back Surface on Round Beamsplitters Minimizes Ghosting
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IR Fused Silica Broadband Plate Beamsplitters (Coating: 0.9 - 2.6 µm)
Features
  • Beamsplitter Coating on Front Surface: 0.9 - 2.6 µm
  • Optimized for 50:50 Beamsplitting for AOI = 45°
  • Ø1/2", Ø1", 25 mm x 36 mm, and Ø2" Versions Available
  • IR Fused Silica Substrate (See Graphs tab for Transmission)
  • AR Coating on Back Surface: 0.9 - 2.6 µm
  • Back Surface has 30 arcmin Wedge
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