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Zinc
Selenide is used for optical windows, lenses, mirrors and
prisms particularly for infrared applications. The transmission
range is 0.5¦Ìm - 22¦Ìm. Used for high power CO2-laser
optics at 10.6micronsZinc Selenide is produced by synthesis
from zinc vapour and H2Se gas, forming as sheets on graphite
susceptors. It is microcrystalline in structure, the grain
size being controlled to produce maximum strength. Single
crystal ZnSe is available, but is not common but has been
reported as having lower absorption and thus more effective
for CO2 optics.
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