15 December 2015 Possibilities of using pulsed lasers and copper-vapour laser system (CVL and CVLS) in modern technological equipment
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Proceedings Volume 9810, International Conference on Atomic and Molecular Pulsed Lasers XII; 981016 (2015) https://doi.org/10.1117/12.2225207
Event: XII International Conference on Atomic and Molecular Pulsed Lasers, 2015, Tomsk, Russian Federation
Abstract
Research on CVL installations with an average power of 20–25 W of cutting and drilling has shown wide range of applications of these lasers for micromachining of metals and a wide range of non-metallic materials up to 1–2 mm. From the analysis indicated that peak power density in the focused light spot of 10–30 μm diameter must be 109 –1012 W/cm2 the productivity and quality micromachining, when the treatment material is preferably in the evaporative mode micro explosions, followed by the expansion of the superheated vapor and the liquid. To achieve such levels of power density, a minimum heat affected zone (5– 10 μm) and a minimum surface roughness of the cut (1–2 μm), the quality of the output beam of radiation should be as high. Ideally, to ensure the quality of the radiation, the structure of CVL output beam must be single-beam, diffraction divergence and have at duration pulses τi = 20–40 ns. The pulse energy should have low values of 0.1–1 mJ at pulse repetition rates of 10–20 kHz. Axis of the radiation beam instability of the pattern to be three orders of magnitude smaller than the diffraction limit of the divergence. The spot of the focused radiation beam must have a circular shape with clear boundary, and a Gaussian intensity distribution.
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N. A. Labin, N. A. Bulychev, M. A. Kazaryan, A. G. Grigoryants, I. N. Shiganov, V. I. Krasovskii, V. I. Sachkov, P. S. Plyaka, I. N. Feofanov, "Possibilities of using pulsed lasers and copper-vapour laser system (CVL and CVLS) in modern technological equipment", Proc. SPIE 9810, International Conference on Atomic and Molecular Pulsed Lasers XII, 981016 (15 December 2015); doi: 10.1117/12.2225207; https://doi.org/10.1117/12.2225207
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