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Calcium fluoride shows good optical and thermo-mechanical properties. It is widely used as optical windows, lenses and prisms in 0.13μm~9.0μm. For its optical isotropy, low absorption and low refractive index. CaF2 has found unique advantages in high power laser andVU laser optics.
Main Properties and Performance | |
Transmission range (μm) | 0.13~9.0 |
Transmittance | ＞90% (0.3~7μm，3mm) |
Refractivity(5μm) | 1.39908 |
Expansion Coefficient (℃-1) | 18.85×10-6 |
Knoop hardness (kg/mm2) | 158.3（100） |
Elastic Coefficients | C11=164；C12=53；C44=33.7 |
Young’s modulus (GPa) | 75.79 |
Poisson’s ratio | 0.28 |
Solubility (g/100gH2O·20℃) | 0.0017 |
Cleavage plane | -111 |
Density(g/cm3) | 3.18 |
Melting Point(℃) | 1360 |
VU laser optics.
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