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Nature of resonator mirror damage in high-power industrial electron-beam-controlled CO2 lasers
E. P. Glotov, V. A. Danilychev, N. N. Sazhina, A. L. Osintseva, Yu. M. Shcherbakov, N. V. Cheburkin
Abstract:
An investigation was made of the nature of damage to resonator mirrors and of the change in the microstructure of the mirror material as a result of prolonged operation of a general-purpose industrial electron-beam-controlled CO2 laser with on output power ~ 10 kW. It was found that the damage to the mirror surfaces occurred at considerably lower radiant flux densities than in the case when radiation is focused on a mirror surface in vacuum. Characteristic forms of surface damage were classified according to the following basic scheme: damage to the surface by incandescent particles formed in the laser active medium from the materials in the discharge chamber and resonator; damage by pitting; appearance of deep craters resulting from breakdown at the mirrors; damage to and crystallization of an oxide film, accompanied by the formation of a dendritic structure. An analysis was made of deformation effects in the material of the mirrors.
Received: 15.12.1983
Citation:
E. P. Glotov, V. A. Danilychev, N. N. Sazhina, A. L. Osintseva, Yu. M. Shcherbakov, N. V. Cheburkin, “Nature of resonator mirror damage in high-power industrial electron-beam-controlled CO2 lasers”, Kvantovaya Elektronika, 11:8 (1984), 1636–1640 [Sov J Quantum Electron, 14:8 (1984), 1100–1102]
Linking options:
https://www.mathnet.ru/eng/qe5372 https://www.mathnet.ru/eng/qe/v11/i8/p1636
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Abstract page: | 126 | Full-text PDF : | 70 | First page: | 1 |
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