Coated Windows

Glass and fused silica windows may be anti-reflection coated on both sides to provide high transmittance or on one side only to provide a weak (~ 4%) reflected beam for sampling.  

The coating types which may be applied to 1 or 2 sides are:

Single wavelength A/R coat       R = 0.25% @ 0°  R = 0.5% @ 45°

Broadband A/R coat                    R_ave = 0.5% @ 0°  R_ave = 0.5% @ 45°

Dual wavelength A/R coat           λ₁   R = 0.25% @ 0°  R = 0.5% @ 45°      λ₂    R = 0.5% @ 0°  R = 1.0% @ 45°

[See Glass and Fused Silica Windows for details of the uncoated windows]

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