Calcium Fluoride (CaF2)

Calcium Fluoride (CaF2)

Calcium Fluoride (CaF2) crystals has a good transmission in the range UV-VIS-IR. It is commonly used for UV and IR optics and lasers because of its low absorbance and high damage threshold.

Specification
Transmission wavelength130nm - 10000nm
MaterialCaF₂
Density (gr/cm³)3.18
Dielectric constant6.76@1HMZ
Melting point (°C)1360
Purity (%)99.9996
Thermal expansion coefficient (1/°C)18.85*10¯⁶
7.3*10¯⁶ @373k
Thermal Conductivity (J/k.m.s.)9.71
Specific heat (J/g.k)0.854
Knoop hardness (Kg/mm²)158.3
Young modulus (GPa)75.8
Shear modulus (GPa)33.77
Poisson ratio0.26
Bulk modulus (GPa)82.71
Reflection loss (2side)5.4% @5000nm
Thermo-optical coefficient-10.6*10¯⁶

Calcium Fluoride (CaF2) right angle prism

Technical parametersCommercial gradePrecision gradeHigh precision grade
Dimension range1-300mm2-300mm2-300mm
Dimension tolerance±0.1mm±0.025mm±0.01mm
Thickness tolerance±0.1mm±0.025mm±0.01mm
Angle tolerance±5'±15"±2"
Surface quality60-4040-2020-10
Surface accuracy1.0λλ/10λ/20
Bevelling0.1-0.5mmx45°
SubstrateCaF₂

Calcium Fluoride (CaF2) windows

Technical parameterCommercial gradePrecision gradeHigh precision grade
Dimension range1-600mm2-600mm2-600mm
Dimensioni tolerance±0.1mm±0.025mm±0.01mm
Thickness tolerance±0.1mm±0.025mm±0.01mm
Angle tolerance±3'±1'±5"
Surface quality60-4040-2020-10
Surface accuracy1.0λλ/10λ/20
Bevelling0.1-0.5mmx45°
SubstrateCaF₂