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758号3栋
氟化镁
MgF2 single crystal is a birefrigent material with particular properties. It has a high resistance to mechanical and thermal shock and radiation. With wide transparent range and high transmissibility, it becomes a popular choice for VUV and excimer laser windows, polarizers, prisms, lenses, wedges, windows, and other optical components |
Specifications:
Surface Quality: | better than 40/20 scratch/dig |
Parallelism: | < 10 arc sec |
Optical Axis Orientation: | +/-0.2deg |
Flatness: | < l/8 @632.8nm |
Wavefront Distortion: | <l /4@632.8nm |
Coating: | Coating upon Request |
Physical and Optical Properties
Transparency Range : | 130-7000nm |
Density : | 3.18 g /cm 3 |
Melting point | 1255 °C |
Mohs Hardness | 6 |
Thermal Expansion Coefficients | parallel c-axis: 10.86 - 14.54 vertical c-axis: 6.23 - 9.25 |
Specific heat capacity | 920 J kg -1 K -1 |
Absorption coefficient (cm -1 ) | 0.07 at 0.2 µm; 0.02 at 5.0 µm |