03 May Magnesium Fluoride (MgF2)
Posted at 22:03h
in MgF
Magnesium Fluoride (MgF2) is a birefringent crystal with an high mechanical and thermal shock resistance.
| Specification | |
|---|---|
| Transmission wavelength | 110nm - 7500nm |
| Material | Magnesium Fluoride (MgF₂) |
| Density (g/cm³) | 3.177 |
| Dielectric constant | 4.87 (parallel C axis) 5.44 (vertical C axis) |
| Melting point (°C) | 1255 |
| Chemical purity | 99.9996 |
| Thermal expansion coefficient (1/k) | 7*10¯⁶ @273k |
| Thermal Conductivity (J/k.m.s.) | 0.3 @ 27°C |
| Specific heat (J/g.k) | 1.003 @298k |
| Knoop hardness (Kg/mm²) | 415 |
| Young modulus (GPa) | 138.5 |
| Shear modulus (GPa) | 15.66 |
| Bulk modulus (GPa) | 101.32 |
| Reflection loss (2sides) | 11.2% @120nm |
| Poisson ratio | 0.276 |
Magnesium Fluoride (MgF2)
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| Technical parameter | Commercial grade | Precision grade | High precision grade |
|---|---|---|---|
| Dimension range | 1-600mm | 2-600mm | 2-600mm |
| Dimension tolerance | ±0.1mm | ±0.025mm | ±0.01mm |
| Thickness tolerance | ±0.1mm | ±0.025mm | ±0.01mm |
| Angle tolerance | ±3' | ±15" | ±5" |
| Surface quality | 60-40 | 40-20 | 20-10 |
| Surface accuracy | 1.0λ | λ/10 | λ/20 |
| Bevelling | 0.1-0.5mmx45° | ||
| Substrate | Magnesium Fluoride (MgF₂) | ||