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CaF2
Calcium fluoride crystal is a kind of fluoride crystals. The advantage of this material is the wide application band width, which can be used in 155nm - 7000nm. It also shows high laser damage threshold, low stress birefringence and high refractive index. The defect is the soft hardness and it is not temperature resistant. It can be used in the fields of laser(especially deep UV excimer laser lithography), infrared, UV optics, high energy detection, as the best material for making optical elements such as optical prisms, lenses and windows in optical systems.
Transmission
氟化钙晶体性能
Indicator name |
Numerical value |
purity % |
99.999 |
density g/cm3 |
3.18 |
Thermal expansion coefficient 1/℃ |
1.89×10-5 |
Refractive index 5mm |
1.39908 |
Thermal conductivity J/k.m.s |
9.71 |
Dielectric constant 1KHZ |
6.76 |
Heat capacity J/g.K |
0.854 |
Kjeldahl hardness kg/mm2 |
158.3 |
Young's modulus GPa |
75.8 |
Melting point ℃ |
1360 |
Poisson's ratio |
0.26 |
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