Calcium fluoride (CaF2)

Calcium fluoride (CaF2) crystal is an important optical material, which has excellent transparency in a wide spectral range from ultraviolet to infrared. The refractive index of CaF2 crystal is relatively low, which allows it to greatly reduce reflection loss in optical components. In addition, CaF2 crystals also have good chemical stability, especially in extreme environments such as high temperatures or acidic environments, where CaF2 crystals can still maintain their stability. Therefore, CaF2 crystals are widely used in the manufacturing of high-quality optical components, such as lenses, windows, prisms, etc., especially in ultraviolet and infrared optical systems. However, its mechanical strength is relatively weak and requires attention during processing and use.

Dihedral Technology(DHD) Co., Ltd. manufacture and processing/provide multiple specifications and high quality CaF2 crystal,targets,materials.

Applications

It is an ideal material for making various optical windows, prisms, and lenses.

Features

Wide transmittance range (within 0.13 μ M~10 μ Good transparency within the wavelength range of m);
Low stress birefringence (no obvious inherent birefringence above 200nm);
Uniform refractive index;
Stable mechanical performance, non deliquescence, and strong resistance to radiation damage. “

Crystal Structure	Cubic
Density	3.18（g/cm³）
Melt Point	1360℃
Refractive Index	1.39908 at 5um
Solubility	0.0017g/100cm（20℃∕water）
Transmission Wavelength	0.13~11.3μm
Kjeldahl Hardness	158.3（100）
Elasticity Coefficient	C₁₁=164、C₁₂=53、C₄₄=33.7
Apparent Elastic Limit	36.54MPa
Thermal Expansion	18.85×10^-6∕K
Orientation	<100>、<001>、<111>±0.5º
Dimension	10x10mm，20x20mm，30x30mm，Ø50.8，Ø76.2 ，Ø100mm
Polishing	One side or two sides
Package	Class 100 clean bag, Class 1000 super clean room

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Calcium fluoride (CaF2)

Applications

Features

Properties