论文信息 - Compact joint transform correlator with a thick photorefractive crystal.

Compact joint transform correlator with a thick photorefractive crystal.

A compact joint 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.

[1] A. B. Vander Lugt,et al. Signal detection by complex spatial filtering , 1964, IEEE Trans. Inf. Theory.

[2] W. Steer,et al. Accuracy of real-time correlations via degenerate optical four-wave mixing , 1983 .

[3] Francis T. S. Yu,et al. A real-time programmable joint transform correlator , 1984 .

[4] B. Loiseaux,et al. Dynamic Optical Cross-Correlator Using A Liquid Crystal Light Valve And A Bismuth Silicon Oxide Crystal In The Fourier Plane , 1985 .

[5] F T Yu,et al. Microcomputer-based programmable optical correlator for automatic pattern recognition and identification. , 1986, Optics letters.

[6] C. R. Petts,et al. Simple computational model of image correlation by four-wave mixing in photorefractive media. , 1987, Applied optics.

[7] G. Gheen,et al. Optical correlators with fast updating speed using photorefractive semiconductor materials. , 1988, Applied optics.

[8] J A Davis,et al. Compact optical correlator design. , 1989, Applied optics.