Calcium Fluoride (CaF2) Windows

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  • Regular price $80.00



Calcium Flouride or CaF₂ is a versatile optical material that can be used from deep in the UV range to far out into the long wavelength infrared range (130nm-10µm). With a low absorption coefficient and a high damage threshold, CaF₂ is a common choice in laser and cryogenic applications. The low index of refraction enables this material to be used without AR coating, making it a versatile, cost-effective option.

Firebird provides these in several uncoated stock configurations but can provide customized and coated to your specifications. 

CaF2 Specs:

Wavelength range: 130nm-9500nm Coating: Uncoated
Diameter tolerance: +/-0.1mm Surface Quality: 60/40
Thickness tolerance: ±0.2mm Paralellism: <1 arc minute
Clear Aperture: 90% Density: 3.18g/cm3
Melting point: 1360ºC Young's Modulus: (GPa): 75.8
Coefficient of Thermal Expansion: 18.85x10/ºC Knoop Hardness:  158.3kg/mm2