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Conferences > CLEO > 2001 > CThX > CThX3
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 2001),
  • paper CThX3

Coherence-gated ultrasound detection through turbid medium

P. Yu, D.D. Nolte, and M.R. Melloch

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Abstract

Photorefractive multiple quantum wells (PRQW) can be used as adaptive beam combiners in laser-based ultrasound detection.1 We previously demonstrated adaptive homodyne laserbased megahertz ultrasound detection using a cw laser.2 In some applications of nondestructive detection, excitation and detection using femtosecond lasers are necessary. In this paper we demonstrate for the first time homodyne detection using a femtosecond laser and dynamic holography, and experimentally study the detection of extremely low intensity and highly distorted wavefronts through turbid media.

© 2001 Optical Society of America

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