CaF₂ Lenses

Material:
CaF₂
Surface Flatness:
N<3, △N<λ/4
Coating:
Uncoated
AR/AR@3-5um, Ravg<1.5%
Surface Quality:
60/40~40/20
Clear Aperture:
>90%
wdt_ID Attributes Values
CaF is commonly used for applications requiring high transmission in the infrared and ultraviolet spectral ranges. Its extremely high laser damage threshold allows it to be used with excimer lasers. The material exhibits a low refractive index, varying from 1.35 to 1.51 within its usage range of 180 nm to 8.0 μm. Calcium fluoride is also fairly chemically inert and offers superior hardness compared to its barium fluoride, magnesium fluoride, and lithium fluoride cousin

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