Windows
Windows are used to enable optical radiation to pass from one environment to another without allowing to environments to mix. Tydex offers plano-plano windows of round, square, rectangular and elliptical (including Brewster's) shape. Wedged parts are also available.
Specification:
Substrate material:KU-1, K8Surface figure @ 633nm:l/10Surface quality, scr/dig:20/10Clear aperture:exceeds central 85% of dimensionDimensional tolerance, mm:+0/–0.25Thickness tolerance, mm:±0.25Wedge:user speciefied (for axample, <=10 arc. sec., <= 5 arc. min., 30 (±5) arc.min)Antiteflection coating:dielectric; user specified, R<=0.25% per surface (R<=0.1% is also possible on request)Damage threshold, J/cm2:2-5, depending on coating spec.
No.Diameter, mmThickness, mm1103.175212.76.35312.79.525425.46.35525.49.525638.16.35750.89.525
Here are some examples of the window coatings:
Fig. 1. UV Fused Silica plano window, AR/AR (R <= 0.25%) @ 266nm.
Fig. 2. K8 plano window, AR/AR (R <= 0.2%) @ 532nm.