Calcium fluoride (CaF2)
ICC-Raman: No fluorescence at 193nm and above under 1W laser, widely used in fluorescence spectrometer.
ICC-E: High internal transmittance, low light energy loss, used in EXCIMER 193/248/355 excimer laser.
ICC-UV: applied to the 200-400nm ultraviolet lens.
ICC-VISIR: applied to the infrared and visible wavelength bands such as 400-10000nm.
ICC-LS: Low-stress and high-uniformity material. The average stress value is less than 2NM and the maximum stress value is less than 15NM. It is widely used in microscope objectives and precision imaging lenses.
Applications :
ICC has vacuum UV/UV/infrared grade calcium fluoride materials for laser, optical, medical, semiconductor, FTIR, arms control and security applications.
Product Advantage :
Calcium fluoride material:
Process: CZ
Size: Polycrystalline is smaller than D280mm ;
Single crystal smaller than D170mm.
Crystal orientation: 111, 001, 110, 222, 400, etc.
Stress: <15nm/cm
Product Parameters :
| The optical properties | |
|
Through the range |
0.13 – 10.5µm |
| transmittance | >94% @ 0.13-10.5mm |
| The refractive index |
1.4288 @ 2.5mm 1.39908 @ 5mm |
| Reflection loss |
5.4% @ 5mm (双面） |
| Absorption coefficient[cm-1] | 7.8 x 10-4 @ 2.7mm |
| Physical properties | |
| Density[g/cm3] |
3.18 |
| Melting point[℃] |
1420 |
| Thermal conductivity[W/(m×K)] |
9.71 @ 293K |
| Coefficient of thermal expansion[10-6/K] |
18.5 @ 273K |
| Knoop hardness[kg/mm2] |
158.3 |
| Specific heat capacity[J/(kg×K)] |
854 |
| Dielectric constant |
6.76 @ 1 MHz |
| Apparent elastic limit[MPa] |
36.54 |
| The poisson coefficient |
0.26 |
| The chemical characteristics | |
|
solubility |
0.016 @ 20℃ |
|
The molecular weight |
78.0748 |
|
structure |
Cubic crystal system |
| Dissociative side |
(111) |
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