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Proceedings Paper

Laser processing quality control by laser-excited SAW with IR detection (LSAW-IRD)
Author(s): Alexander A. Karabutov; Alexander P. Kubyshkin; Vladislav Ya. Panchenko
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Paper Abstract

The new method of nondestructive remote control of laser processing quality is proposed. The subjects of control are structure, material properties and defects in near surface layers, modified by laser action just after laser processing (welding, heat treatment etc.). The proposed technique includes the laser excitation of surface acoustic waves (SAW) and their scattering in the processing area. For the remote registration of SAW the novel method is proposed. It's based on the detection of IR radiation arising due to temperature variation in SAW. Theoretical foundation of this technique is developed. The estimates show the reliability of LSAW-IRD. The advantage of scheme proposed is the ability to investigate rough surfaces in remote manner, as well as it possible compatibility with laser processing units.

Paper Details

Date Published: 8 April 1996
PDF: 11 pages
Proc. SPIE 2703, Lasers as Tools for Manufacturing of Durable Goods and Microelectronics, (8 April 1996); doi: 10.1117/12.237723
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)


Published in SPIE Proceedings Vol. 2703:
Lasers as Tools for Manufacturing of Durable Goods and Microelectronics
Jan J. Dubowski; Jyotirmoy Mazumder; Leonard R. Migliore; Chandrasekhar Roychoudhuri; Ronald D. Schaeffer, Editor(s)

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