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Kvantovaya Elektronika, 2009, Volume 39, Number 4, Pages 321–327 (Mi qe13964)  

This article is cited in 1 scientific paper (total in 1 paper)

Interaction of laser radiation with matter. Laser plasma

Effects of laser radiation on immobile and fast-moving targets

V. V. Osipov, V. V. Lisenkov, V. A. Shitov, K. E. Luk'yashin

Institute of Electrophysics, Ural Branch, Russian Academy of Sciences, Ekaterinburg

Abstract: We have studied the effects of laser pulses up to 50 J in energy and up to 1100 μs in duration, with a rise time of ~300 μs, on immobile and moving (linear velocity of up to 104 cm s-1) stainless steel targets. The results indicate that, in the vapour above an immobile target, optical breakdown develops at a spot-averaged power density of 5.5×106 W cm-2, against 7.3×106 W cm-2 in air. This undesirable effect can be eliminated even at an order of magnitude higher incident power density by rapidly rotating the target (linear velocity of ~50 cm s-1 relative to the laser beam). At incident power densities in the range (0.6—1.2)×107 W cm-2 (incident powers from 12 to 24 kW), evaporation from a rotating target is intermittent. To interpret this effect, a numerical model is developed which takes into account the influence of target burning. Its predictions agree with the evaporation behaviour observed in our experiments. The thicknesses of the evaporated and molten layers are evaluated as functions of laser beam parameters and target velocity, with reference to the optimisation of laser surface processing conditions.

Full text: PDF file (255 kB)

English version:
Quantum Electronics, 2009, 39:4, 321–327

Bibliographic databases:

PACS: 42.62.Cf, 52.38.Mf
Received: 02.09.2008

Citation: V. V. Osipov, V. V. Lisenkov, V. A. Shitov, K. E. Luk'yashin, “Effects of laser radiation on immobile and fast-moving targets”, Kvantovaya Elektronika, 39:4 (2009), 321–327 [Quantum Electron., 39:4 (2009), 321–327]

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  • http://mi.mathnet.ru/eng/qe/v39/i4/p321

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    Citing articles on Google Scholar: Russian citations, English citations
    Related articles on Google Scholar: Russian articles, English articles

    This publication is cited in the following articles:
    1. Lebedev V.F., J. Opt. Technol., 84:2 (2017), 82–88  crossref  mathscinet  isi  scopus
  • Квантовая электроника Quantum Electronics
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