Calcium Fluoride (CaF2) Materials, Optical
Featured Product from Intrinsic Crystal Technology Co., Ltd. (ICC)
|
BASE PROPERTIES |
|
|---|---|
| PARAMETER | VALUE |
| OPTICAL | |
| Transmission Range | 0.13 to 10 microns |
| Refractive Index | 1.39908 at 5 microns |
| Reflection Loss | 5.4% at 5 microns (2 surfaces) |
| Restrahlen Peak | 35 microns |
| dN/dT | -10.6 x 10-6e/°C |
| PHYSICAL | |
| Density | 3.18 g/cm3 |
| Melting Point | 1360 °C |
| Thermal Conductivity | 9.71 W/(m*K) |
| Thermal Expansion | 18.85 x 10-6e/°C |
| Hardness | Knoop 158.3 kg/mm2 (100) |
| Specific Heat Capacity | 854J/(kg K) |
| Dielectric Constant | 6.76 at 1MHz |
| Young's Modulus (E) | 75.8 GPa |
| Shear Modulus (G) | 33.77 GPa |
| Bulk Modulus (K) | 82.71 GPa |
| Elastic Coefficients | C11=164 MPa, C12=53 MPa, C44=33.7 MPa |
| Apparent Elastic Limit | 36.54 MPa |
| Poisson Ratio | 0.26 |
| CHEMICAL | |
| Solubility | 0.0017g/100g water at 20 °C |
| Molecular Weight | 78.08 |
| Class/Structure | Cubic (111) cleavage |
CaF2 is the foremost optical material encompassing a broad spectrum of applications:
- IR optics
- Optics for astronomical instrumentation
- Microscope optics
- Spectroscopy optics
- UV optics
- Laser windows
- Excimer Laser Optics
- Microlithography Optics
