Laser processing quality control by laser-excited SAW with IR detection (LSAW-IRD)

Alexander A. Karabutov; Alexander P. Kubyshkin; Vladislav Ya. Panchenko

doi:10.1117/12.237723

8 April 1996 Laser processing quality control by laser-excited SAW with IR detection (LSAW-IRD)

Alexander A. Karabutov, Alexander P. Kubyshkin, Vladislav Ya. Panchenko

Proceedings Volume 2703, Lasers as Tools for Manufacturing of Durable Goods and Microelectronics; (1996) https://doi.org/10.1117/12.237723
Event: Photonics West '96, 1996, San Jose, CA, United States

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.

Citation Download Citation

Alexander A. Karabutov, Alexander P. Kubyshkin, and Vladislav Ya. Panchenko "Laser processing quality control by laser-excited SAW with IR detection (LSAW-IRD)", Proc. SPIE 2703, Lasers as Tools for Manufacturing of Durable Goods and Microelectronics, (8 April 1996); https://doi.org/10.1117/12.237723

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