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Directional Detection of Laser Ultrasonic via Single-Crystal TWM Configuration

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Abstract

Original configuration for adaptive directional detection of laser induced ultrasonic signals using Two-Wave Mixing (TWM) in a single photorefractive sample is proposed. Preliminary results on experimental verification of this technique for detection of compression and shear waves in Al plate using Bi12SiO20 (BSO) photorefractive crystal at λ = 532nm are presented.

© 1999 Optical Society of America

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