Beam Splitter Coatings

Non-Polarizing Beam Splitter Cubes/Plate Polarizers

SIO Non-polarizing Beam Splitter Cubes and Plate Polarizers are fabricated from all dielectric materials. The cubes/plates have the advantage of low absorption (<0.5%) over comparable metal/dielectric beam splitters while retaining <3% differences in R/T values for any polarization state.

A reflective/transmission value of 50/50 ± 7% is available from stock in ½”, 1” and 2” cubes/plates with entrance and exit faces AR coated. Standard wavelengths include 632.8 nm. Other sizes are available upon request.


  • Reflectance and Transmittance: 50 ± 7% for any polarization matched to within ± 3% of the other states (other reflectances available upon request
  • Scatter and Absorption Loss: < 0.5%
  • Angle of Incidence: 45º