Diamond optical window
- Diamonds Grown by Chemical Vapor Deposition
- Broad Transmission Spectrum from 220 nm to >50 µm
- Available with 5.0 mm or 10.0 mm Diameters
A diamond optical window offers exceptional hardness, high thermal conductivity, and excellent transparency from UV to far-infrared wavelengths. It is ideal for extreme environments, including high-power laser systems and aerospace applications. Diamond windows provide superior durability, scratch resistance, and minimal optical distortion. Their low absorption and high damage threshold make them perfect for demanding optical systems.
General Specification
| Transmission Range | 300nm to 2.5 μm and 7 to >100 μm (1) |
| Refractive Index | 2.4175 @ 0.589 μm (1) |
| Reflection Loss | 30% at 0.589 μm (2 surfaces) |
| Absorption Coefficient | <0.07 cm-1 @ 8 to 12 μm |
| dn/dT | 9.6 x 10-6 /°C (3) |
| Density | 3.51 g/cc |
| Melting Point | 3497°C (Oxidises in air at 700°C – see notes) |
| Thermal Conductivity | 2600 W m-1 K-1 @ 273K (2) |
| Thermal Expansion | 1.0 x 10-6 /°C at 293K |
| Hardness | Knoop 5700 to 10400 |
| Specific Heat Capacity | 502 J Kg-1 K-1 at 273K (4) |
| Dielectric Constant | 5.68 @ 1.68Mhz at 300K (2) |
| Youngs Modulus (E) | 1050 GPa |
| Bulk Modulus (K) | 442 GPa |
| Elastic Coefficients | C11=1076; C12=125; C44=577 |
| Apparent Elastic Limit | 276 MPa |
| Poisson Ratio | 0.16 to 0.29 |
| Solubility | Insoluble in water |
| Molecular Weight | 12.01 |
| Class/Structure | Cubic Diamond, Fd3m |
