Towards A Practical Updatable Optical Image Correlator

M. G. Nicholson; I. R. Cooper; G. G. Gibbons

doi:10.1117/12.937030

10 July 1987 Towards A Practical Updatable Optical Image Correlator

M. G. Nicholson, I. R. Cooper, G. G. Gibbons

Proceedings Volume 0701, 1986 European Conf on Optics, Optical Systems and Applications; (1987) https://doi.org/10.1117/12.937030
Event: 1986 International European Conference on Optics, Optical Systems, and Applications, 1986, Florence, Italy

Abstract

We describe initial experiments on a photorefractive based optical image correlator which employs a frequency doubled, pulsed Nd:YAG laser with a pulse length of 10 nsec to write a phase grating into a crystal of bismuth silicon oxide. The correlation of simple binary images has been demonstrated and measurements indicate that the rise time of the correlation signal is less than 200 nsec. The vibration stability of the pulsed system is much greater than previous CW systems.

Citation Download Citation

M. G. Nicholson, I. R. Cooper, and G. G. Gibbons "Towards A Practical Updatable Optical Image Correlator", Proc. SPIE 0701, 1986 European Conf on Optics, Optical Systems and Applications, (10 July 1987); https://doi.org/10.1117/12.937030

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