Partial Reflecting CO₂ Laser Beamsplitters

These partial reflectors are intended for use with CO₂ lasers.  They use all-dielectric coatings on Zinc Selenide, Gallium Arsenide or Germanium substrates.  The coating precisely controls the percentage transmittance and reflectance at 10.6μm.  They can be supplied for use at 45° or 0° angle of incidence.

Reflectance may be chosen at any value between 5% and 99.5%.                    

Standard diameters are 6.3, 9.5, 12.7, 19.1, 25.4 and 27.9mm.  Larger diameters (38.1, 50.8, 63.5 and 76.2 mm) are available only on Zinc Selenide.  Thickness varies from 3 to 6 mm as required to preserve the flatness specification.

These partially reflective coatings may be applied to spherical substrates also.  Please let us know your precise requirements.

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