筱晓光子 金刚石微波窗片透镜 太赫兹窗口( CVD金刚石 介电等)
微波等离子体CVD金刚石圆片，掺硼盘（蓝色）、光学金刚石、机械、未抛光盘。CVD金刚石重要的性能是的硬度，高的导热系数（>1800 W/mK，是铜的五倍）
| Property | Value |
| Vickers hardness* | 10,000 kg/mm2 |
| Young's modulus* | 1050 GPa |
| Poisson's ratio | 0.1 |
| Density | 3.515 g/cm3 |
| Atom density* | 1.77×1023 1/cm3 |
| Thermal expansion coefficient | 1.0*10-6/K @300K |
| Sound velocity* | 17,500 m/s |
| Friction coefficient | 0.1 |
| Specific heat @ 20°C | 0.502 J/gK |
| Debye temperature* | 1860 10K |
| Bandgap | 5.45 eV |
| Resistivity | 1013 - 1016 ohmm |
| Property | Value |
| Transmission | 225nm to far IR , > 70% @ 10µm |
| Refractive index | 2.38 @ 10µm, 2.41 @ 500nm |
| Absorption coefficient | 0.10 cm-1 @ 10µm |
| Bandgap | 5.45 eV |
| Tensile strength (0.5mm thick) | |
| Nucleation surface in tension Growth surface in tension | 600 MPa 400 MPa |
| Loss tangent (tan @140 GHz) | < 2.0×10-5 |
| Dielectric constant | 5.7 |
| Property | Value |
| Dimensions | |
| Thickness Diameter | 10 - 2000 µm up to 100 mm |
| Surface finish | |
| Shape | flat, spherical (convex & concave) |
| Roughness | < 5 nm* |
| Flatness | 1 fringe/cm* |
| Wedge | 0 – 1°* |
| Antireflection Coatings (visible and infrared) | |
| Spec. Transmission at 10.6 µm >98.6 % | |
| Wavefront distortion | |
| < 4 fringes at 633 nm over 30 mm* | |
| Mounting | |
| Diamond windows mounted e.g. in UHV flanges (bakeable at 250°C, vacuum tight < 10-10 mbar l/s)* | |
金刚石透射曲线图
太赫兹介电性能：
我们提供的金刚石产品包括：
航天用的CVD 金刚石窗片分束镜
高精度抛光金刚石球透镜
CVD 金刚石UHV窗口
高功率CO2激光器窗口
直径80mm的金刚石wafers
高功率X射线窗口
更新时间：2023/5/24 17:35:26
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