Laser-based ultrasound detection using a double-pumped phase-conjugate mirror for wavefront compensation

Author

Dunning, G.J. ; Pepper, D.M. ; Klein, M.B. ; Mitchell, P.V. ; O´Meara, T.R. ; Delaye, P. ; Blouin, Arnaud ; Drolet, D. ; Monchalin, J.-P.

Author_Institution

Hughes Res. Labs., Malibu, CA, USA

fYear

1996

fDate

2-7 June 1996

Firstpage

367

Lastpage

368

Abstract

Summary form only given. We present the results of a laser-based ultrasound inspection system combining a wavefront-scrubbed laser receiver with a pulsed laser ultrasonic generator. Laser based ultrasound represents a noncontact, long-standoff-distance technology to remotely inspect materials for integrity of bonds, surface treatments, thickness, defects, microcracks, and temperature.

Keywords

crack detection; cracks; inspection; laser mirrors; measurement by laser beam; noncrystalline defects; optical phase conjugation; optical pumping; optical receivers; temperature measurement; thickness measurement; ultrasonic materials testing; adaptive optics; bond integrity; defects; double-pumped phase-conjugate mirror; laser based ultrasound; laser-based ultrasound detection; laser-based ultrasound inspection system; microcracks; noncontact long-standoff-distance technology; pulsed laser ultrasonic generator; remotely inspect; surface treatments; temperature measurement; thickness measurement; wavefront compensation; wavefront-scrubbed laser receiver; Adaptive optics; Frequency; Mirrors; Optical mixing; Optical scattering; Partial response channels; Phase detection; Photoconductivity; Photodetectors; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 1996. CLEO '96., Summaries of papers presented at the Conference on

Conference_Location

Anaheim, CA, USA

Print_ISBN

1-55752-443-2

Type

conf

Filename

864797