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Home > Products > Infrared Optics > BaF2 (Barium Fluoride)

IR Grade BaF2 Windows

The transmittance of BaF2 is relatively low at 200nm (0.60), but at 500nm it rises to 0.96-0.97 and stays at that level until 9μm, when it begins to fall (0.85 for 10μm and 0.42 for 12μm). The refractive index from 700nm to 5μm is about 1.46.

Chemical Analysis of BaF2
Chemical	specification
BaF2	99.99%
Fe	＜10ppm
Al	＜10ppm
Ba	＜10ppm
Sr	＜10ppm
Si	＜10ppm
Ce	＜1ppm
Mn	＜1ppm
Cu	＜1ppm