Detection of ultrasonic motion of a scattering surface by two-wave mixing in a photorefractive GaAs crystal
- 22 August 1994
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 65 (8) , 932-934
- https://doi.org/10.1063/1.112153
Abstract
The performance of an interferometric system based on two‐wave mixing at 1.06 μm in undoped GaAs crystal, for the remote detection of transient motion of a scattering surface, is described. In this system, the wave scattered by the surface is mixed inside the photorefractive crystal with a pump wave directly derived from the laser to provide the reference wave of the interferometer. The system shows several features appropriate to industrial applications, although its sensitivity is less than passive interferometric systems of the confocal Fabry–Perot type presently in use, except in the low frequency range (below 1 MHz).Keywords
This publication has 5 references indexed in Scilit:
- Broadband optical detection of ultrasound by two-wave mixing in a photorefractive crystalApplied Physics Letters, 1991
- Broadband optical detection of ultrasound by optical sideband stripping with a confocal Fabry–PerotApplied Physics Letters, 1989
- Cross-polarization photorefractive two-beam coupling in gallium arsenideJournal of the Optical Society of America B, 1988
- Optical Detection of UltrasoundIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 1986
- Beam coupling in undoped GaAs at 106 μm using the photorefractive effectOptics Letters, 1984