Robust Laser-Based Ultrasound Vibrometer Using a "Cat" Conjugator

D.M. Pepper; G.J. Dunning; P.V. Mitchell

Conference on Lasers and Electro-Optics
OSA Technical Digest (Optica Publishing Group, 2001),
paper CThL45

Robust Laser-Based Ultrasound Vibrometer Using a "Cat" Conjugator

D.M. Pepper, G.J. Dunning, and P.V. Mitchell

Conference on Lasers and Electro-Optics 2001

Baltimore, Maryland United States
6–10 May 2001
ISBN: 1-55752-662-1

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Poster Session 3 (CThL)

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D. M. Pepper, G. J. Dunning, and P. V. Mitchell, "Robust Laser-Based Ultrasound Vibrometer Using a "Cat" Conjugator," in Conference on Lasers and Electro-Optics, J. Kafka, K. Vahala, R. Williamson, and A. Willner, eds., OSA Technical Digest (Optica Publishing Group, 2001), paper CThL45.

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Abstract

Laser-based ultrasound, LBU,¹ has been shown to be a very effective diagnostic tool for remote inspection of opaque materials for internal defects (microcracks, delamination, hidden corrosion.) and for materials characterization (temperature, hardness, thickness, porosity). In LBU, a pair of lasers is used to replace contact transducers: One laser, typically a pulsed laser, is used to generate ultrasound in a sample via thermoelastic or ablative processes.

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