CVD diamond, or Chemical Vapor Deposition diamond, is renowned for its exceptional optical properties.
What are the Optical Properties of CVD Diamond? 5 Key Points You Need to Know
1. Transparency
CVD diamond is transparent from the UV (225 nm) to the far infrared. It has the widest spectral band of any known material, extending from ultraviolet to far infrared and the millimeter-wave microwave band.
2. Absorption
CVD diamond has only minor absorption bands resulting from two phonon absorption between 2.5 and 6.5 µm.
3. Optical Applications
Due to its transparency and wide spectral band, CVD diamond is an ideal material for multispectral optical applications. It is commonly used in laser optics, where it provides optimum exit windows for CO2 lasers. It is also used in automotive cutting applications and in the production of high power CO2 lasers, disk lasers, and solid-state lasers.
4. Coatings
Diamond coatings made through CVD techniques have high optical transparency in the UV-IR range. This, combined with their semi-conductivity and mechanical robustness, makes them promising candidates for solar cells, optical devices, transparent electrodes, and photochemical applications.
5. Overall Benefits
CVD diamond exhibits excellent optical properties, making it a valuable material for various industrial, R&D, defense, and laser applications that require high optical quality and transparency across a wide spectral range.
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