
透射镜片材料 --- Germanium (Ge) 锗
透射镜片材料 --- Germanium (Ge) 锗
Transmission Range | 1.85 - 23 µm (thickness 2 mm) |
Refractive Index | 4.104147 @633nm |
Reflection Loss | 36.04% @10 µm |
Density | 5.327 g/cm3 |
Melting point | 938.25°C |
Molecular Weight | 72.59 |
Thermal Conductivity | 58.61 W/(m·K) |
Spec. Heat Capacity | 310 J/(kg·K) (@0°...100°C) |
Thermal Expansion | 5.9 · 10-6/K @293K |
Hardness (Mohs) | 800 |
Young's Modulus | 102.7 <100> GPa |
Shear Modulus | 67 GPa <100> nbsp] |
Bulk Modulus | 77.2 GPa |
Fracture Modulus | 110 MPa |
Elastic Coefficient | C11 = 129; C12 = 48.3; C44 = 67.1 GPa |
Dielectric Constant | 16.6 @f = 9.37 GHz |
Solubility in Water | insoluble |
Crystal Structure | single crystal, synthetic |
Crystal Type | cubic, diamond structure, a = 5.62 Å |
Cleavage Planes | (111), not perfect |
Poisson Ratio | 0.2 |
Application | lenses, band pass filters, thermography, ATR Crystals, IR optics |
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