Due to covering a very wide transmission range of 0.6-22 µm, chemical vapor deposition-grown zinc selenide (ZnSe) is used as a high-quality optical material to fabricate optical components for high-power IR lasers. Alfa Chemistry provides customers with ZnSe windows.
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Catalog Number
ACMA00028174
Product Name
ZnSe Windows with AR Coating, ø76.2mm
Melting Point
1525 ℃
Diameter
ø 76.2 mm
Thickness
6.4 mm
DimensionTolerance
diameter±0.13mm/thickness±0.1mm
Coating
both surfaces AR coated@10.6µm, AOI=0°, R≤0.5% per surface
Flatness
λ /40 per inch @ 10.6 µm over clear aperture
Parallelism
3 arcmin
Surface Quality
40-20 scratch & dig
ClearAperture
90% of the diameter
Crystal Structure
cubic
Density
5.27 g/cm3
Absorption Coefficient
(Bulk) @10.6 µm, 0.6-1.0×10-3 cm-1
Refractive Indices
@ 8-13 µm, n = 2.417-2.385
@ 10.6 µm, n = 2.403
Expansion Coefficient
(Thermal expansion coefficient) 8.56×10-6 ℃-1
Transmission
0.6-22 µm
Material
ZnSe
MSDS
COA
Spec Sheet
1. Low absorption at the red end of the visible spectrum; 2. Not hygroscopic; 3. Quite stable in laboratory environment;
Zinc selenide windows are the most popular devices for infrared applications.