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Optical Engineering

Surface-Wave Acousto-Optic Signal Processors
Author(s): N. J. Berg; J. N. Lee; B. J. Udelson
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Paper Abstract

A number of signal-processing devices have been developed that use the Bragg interaction between laser beams and surface acoustic waves in transparent delay lines. Convolvers and correlators having time-bandwidth products of up to 10,000 have been constructed and have been used to obtain signal-to-noise enhancement of signals buried in noise. A real-time, continuous Fourier transformer has been achieved. Initial results have been obtained in performing a discrete Fourier transform using an acoustooptic implementation of the triple-product convolver. A programmable memory correlator based on the acousto-photorefractive effect has been demonstrated using two distinct writing modes and writing-laser wavelengths.

Paper Details

Date Published: 1 June 1980
PDF: 11 pages
Opt. Eng. 19(3) 193359 doi: 10.1117/12.7972520
Published in: Optical Engineering Volume 19, Issue 3
Show Author Affiliations
N. J. Berg, Harry Diamond Laboratories (United States)
J. N. Lee, Harry Diamond Laboratories (United States)
B. J. Udelson, Harry Diamond Laboratories (United States)

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