Laser opto-acoustic profilometry of solid surfaces

Alexander A. Karabutov; Alexander P. Kubyshkin; Vladislav Ya. Panchenko; Natalia B. Podymova

doi:10.1117/12.271782

2 April 1997 Laser opto-acoustic profilometry of solid surfaces

Alexander A. Karabutov, Alexander P. Kubyshkin, Vladislav Ya. Panchenko, Natalia B. Podymova

Proceedings Volume 3091, Laser Applications Engineering (LAE-96); (1997) https://doi.org/10.1117/12.271782
Event: International Symposium on Intensive Laser Actions and Their Applications and Laser Applications Engineering, 1996, St. Petersburg-Pushkin, Russian Federation

Abstract

A laser opto-acoustic system for measuring 3-D objects surface topology has been described. The main principle of operation consists in excitation of a short acoustic pulse by irradiation of surface under test by short laser pulse and in measuring the time of acoustic pulse traveling to the detector. A laser pulse with nanosecond scale duration and liquid immersion medium with high enough sound speed was used to increase the measurement precision. The examples of system applications including aircraft turbine blade measuring have been presented.

Citation Download Citation

Alexander A. Karabutov, Alexander P. Kubyshkin, Vladislav Ya. Panchenko, and Natalia B. Podymova "Laser opto-acoustic profilometry of solid surfaces", Proc. SPIE 3091, Laser Applications Engineering (LAE-96), (2 April 1997); https://doi.org/10.1117/12.271782

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