Laser Protection Window

Specifications

Substrate Material: N-BK7, Fused Silica
Diameter (or Largest Dimension): 25.4 mm
Thickness: 3 mm
Antireflection Coating: Coated
Surface Quality (Scratch-Dig): 60-40
Surface Flatness: <= Lambda

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Features

Material Fused Silica
Dimension Tolerance +0.0/-0.2mm
Thickness Tolerance ±0.2mm
Clear Aperture >80%
Parallelism <1 arc minute
<!--1-->Surface Quality 60/40 scratch and dig
Transmitted Wavefront Distortion <λ@633nm per 25mm
Chamfer <0.5mmx45deg
<!--0-->Coating Both sides AR coated for YAG laser, R<0.5%@1047-1064nm per surface, AOI 0deg, damage threshold >15J/cm2, 20ns, 20Hz, @1064nm