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Conferences > CLEO > 1999 > CFB > CFB2
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1999),
  • paper CFB2

Homodyne detection of ultrasonic surface displacements using two-wave mixing In photorefractive polymers

Marvin B. Klein, G. David Bacher, Anders Grunnet-Jepsen, Daniel Wright, and W. E. Moerner

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Abstract

Laser-based ultrasound is a promising technique for remote ultrasonic inspection.1 One approach for the measurement of small ultrasonic surface displacements uses dynamic holography in a photorefractive material to combine a distorted signal beam with a plane-wave reference beam and match their wavefronts for homodyne detection. Slow variations in the wavefront of the signal beam are compensated by the real-time hologram and thus do not produce noise or interfere with the quality of the wavefront overlap in the output beams.

© 1999 Optical Society of America

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