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Proceedings Paper

Overheating of metals under transparent films by pulsed laser beam
Author(s): Alexander A. Karabutov; Alexander P. Kubyshkin; Vladislav Ya. Panchenko; Natalia B. Podymova
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Paper Abstract

The paper presents the results of theoretical and experimental investigation on the process of metal boiling initiated by pulsed laser beam, with a transparent layer on the metal surface that provides the impedance acoustic load. The theoretical analysis shows that with the squeezed surface, when the energy thresholds of metal boiling essentially depend on laser pulse shape and duration, considerable overheating of metal is possible in the course of laser pulse. In the experiments on mercury, nonlinear variations in the photoacoustic signal were registered that are due to vapor pressure contribution under the excess of boiling thresholds. The experimental values of mercury boiling thresholds under pulse laser heating agree well with theoretical estimates.

Paper Details

Date Published: 1 April 1994
PDF: 8 pages
Proc. SPIE 2257, Russia National Conference: Industrial Lasers and Laser Material Processing, (1 April 1994); doi: 10.1117/12.171632
Show Author Affiliations
Alexander A. Karabutov, Scientific Research Ctr. for Technological Lasers (Russia)
Alexander P. Kubyshkin, Scientific Research Ctr. for Technological Lasers (Russia)
Vladislav Ya. Panchenko, Scientific Research Ctr. for Technological Lasers (Russia)
Natalia B. Podymova, Moscow State Univ. (Russia)


Published in SPIE Proceedings Vol. 2257:
Russia National Conference: Industrial Lasers and Laser Material Processing
Vladislav Ya. Panchenko; Vladimir S. Golubev, Editor(s)

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