Compact joint transform correlator with a thick photorefractive crystal
- 10 May 1992
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 31 (14) , 2416-2418
- https://doi.org/10.1364/ao.31.002416
Abstract
A compactjoint transform correlator with a thick photorefractive crystal is presented. We demonstrate that Bragg diffraction severely limits the correlation performance in a thick crystal. To relax the Bragg limitation of the crystal a Galilean telescopic beam compression technique is used in the joint transform correlator.Keywords
This publication has 5 references indexed in Scilit:
- Optical correlators with fast updating speed using photorefractive semicondutor materialsApplied Optics, 1988
- Simple computational model of image correlation by four-wave mixing in photorefractive mediaApplied Optics, 1987
- Microcomputer-based programmable optical correlator for automatic pattern recognition and identificationOptics Letters, 1986
- Dynamic Optical Cross-Correlator Using A Liquid Crystal Light Valve And A Bismuth Silicon Oxide Crystal In The Fourier PlaneOptical Engineering, 1985
- A real-time programmable joint transform correlatorOptics Communications, 1984