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This article is cited in 3 scientific papers (total in 3 papers)
Interaction of laser radiation with matter
Effect of CO2-laser power density on the absorption coefficient of polycrystalline CVD diamonds
M. S. Andreevaa, N. V. Artyushkinb, M. I. Krymskiib, A. I. Laptevb, N. I. Polushinb, V. E. Rogalinc, M. V. Rogozhinb a Lomonosov Moscow State University
b National University of Science and Technology «MISIS», Moscow
c Institute of Problems of Electrophysics of the Russian Academy of Sciences, St. Petersburg
Abstract:
The effect of 1-s irradiation of an uncooled polycrystalline CVD diamond plate by a focused cw CO2 laser beam with a power density of 300 – 800 kW cm-2 is investigated. The absorption coefficient of the sample at a power density of 800 kW cm-2 is found to be 0.035 cm-1 larger as compared with that at 300 kW cm-2, which is related to the temperature dependence of its phonon-induced absorption with a change in temperature from 44 to 100 °C. It is shown that polycrystalline diamond, in contrast to other optical materials, does not exhibit nonlinear (avalanche-like) rise in absorption at high CO2-laser power densities, at least up to 800 kW cm-2.
Keywords:
polycrystalline CVD diamond, CO2 laser, radiation, power density, absorption coefficient, output window, pyrometer, mathematical simulation.
Received: 18.08.2020 Revised: 05.10.2020
Citation:
M. S. Andreeva, N. V. Artyushkin, M. I. Krymskii, A. I. Laptev, N. I. Polushin, V. E. Rogalin, M. V. Rogozhin, “Effect of CO2-laser power density on the absorption coefficient of polycrystalline CVD diamonds”, Kvantovaya Elektronika, 50:12 (2020), 1140–1145 [Quantum Electron., 50:12 (2020), 1140–1145]
Linking options:
https://www.mathnet.ru/eng/qe17362 https://www.mathnet.ru/eng/qe/v50/i12/p1140
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