MgF2 exhibits excellent broadband transmission from 120 nm to 8 μm , from the deep UV to the mid infrared. This makes them a good choice for UV radiation sources and receivers as well as for use at the Hydrogen Lyman-alpha line. They are often used as UV viewpoints and a good option for UV polarizers and excimer laser applications. It has a high transmittance between 120 nm and 8 µm, and between 0.4-5.0 µm transmits over 90%.
| Diameter | Monocrystalline 3-150mm Polycrystalline<200mm |
| Orientation | 001, 100, 110,210 |
| Density,g/cm3 | 3.18 |
| Lattice constant | a=b=4.621Å, c=3.053Å |
| Color | Colorless |
| Melting point, ℃ | 1255 |
| Boiling Point, ℃ | 2239 |
| Transmission range, um | 0.11-8.5 |
| Solubility in water,g/100 cm3 | 0.0076 |
| Thermal Conductivity@319K, W/(mxK) | 21(para) 33.6(perp) |
| Specific Heat Capacity, J/(kgxK) | 920 |
| Thermal Expansion@300K, 10-6/C | 121(para)33.6(perp) |
| Young’s Modulus, GPa | 138 |
| Shear Modulus(G), GPa | 54.66 |
| Knoop Hardness, kg/mm2 | 415 |
| Bulk Modulus(K), GPa | 101.32 |
| Poisson’s Ratio | 0.276 |
| Mohs Hardness | 5-6 |
| Refractive Index as a function of wavelength | ||
Wavelength(um) | N0 | Ne |
| 0.2 | 1.4231 | 1.4367 |
| 0.5 | 1.3797 | 1.3916 |
| 1.0 | 1.3686 | 1.3797 |
| 2.0 | 1.3618 | 1.3724 |
| 4.0 | 1.3525 | 1.3622 |
| 5.0 | 1.3400 | 1.3487 |
| 6.0 | 1.3242 | 1.3315 |
| 7.0 | 1.34 | 1.3101 |
