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Window (AR Coated)
ZnSe Window Protection Type
Size: 99mmØ +.00, -.15mm X 4.0mm ± .25mm
Flatness: 1/20 wave @ 10.6µm Transmitted Wavefront Distortion
Coated: AR/AR @ 10.6µm
Replaces ZENNA Laser Systems Window
All other specs standard
Material: Zinc Selenide (ZnSe)
Laser Grade Diameter Tolerances: +.000”, -.005” for parts up to 2.000”Ø
+.000”, -.010” for parts from 2.50” to 6.000”Ø
Thickness: ±.010”
Parallelism: < 30 seconds of arc
Surface Quality: < 40/20 scratch – dig Laser Finish
Standard high efficiency low loss
anti-reflectance thin film coating applied to both sides.
Reflectance per surface @ 10.6µm
for normal incidence <0.20%
Total finish part Absorption < .25%
Transmission > 99.0% typically
