Effect of CO2-laser power density on the absorption coefficient of polycrystalline CVD diamonds
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2020-12-01 |
| Journal | Quantum Electronics |
| Authors | M. S. Andreeva, N. V. Artyushkin, Š. Š. ŠŃŃŠ¼ŃŠŗŠøŠ¹, Š. I. Laptev, N. I. Polushin |
| Institutions | Lomonosov Moscow State University, Institute of Electrophysics |
| Citations | 4 |
Abstract
Section titled āAbstractāAbstract The effect of 1-s irradiation of an uncooled polycrystalline CVD diamond plate by a focused cw CO 2 laser beam with a power density of 300 - 800 kW cm ā2 is investigated. The absorption coefficient of the sample at a power density of 800 kW cm ā2 is found to be 0.035 cm ā1 larger as compared with that at 300 kW cm ā2 , which is related to the temperature dependence of its phonon-induced absorption with a change in temperature from 44 to 100 Ā°C. It is shown that polycrystalline diamond, in contrast to other optical materials, does not exhibit nonlinear (avalanche-like) rise in absorption at high CO 2 -laser power densities, at least up to 800 kW cm ā2 .
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 1980 - USSR Inventorās Certificate No. 339134 (priority date 10 Yuly, 1956)