Title :
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
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;
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
