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Optics Letters

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  • Vol. 19, Iss. 21 — Nov. 1, 1994
  • pp: 1765–1767

Optical correlator that uses cesium vapor

Ivan Biaggio, B. Ai, R. J. Knize, Jouni P. Partanen, and Robert W. Hellwarth  »View Author Affiliations


Optics Letters, Vol. 19, Issue 21, pp. 1765-1767 (1994)
http://dx.doi.org/10.1364/OL.19.001765


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Abstract

We obtain the correlation pattern between two amplitude-modulated input images of 36 and 280 random black and white pixels, using the standard degenerate four-wave-mixing geometry of 852-nm optical beams in a 1-mm-thick cesium-vapor cell. The total optical input power is 3.2 mW to obtain 0.4 nW of power in the correlation pattern. We verified that the buildup time of the four-wave-mixing signal is ~30 ns. Using the random patterns, we analyze the performance of the cesium optical correlator in terms of the number of pixels that can be processed and the number of photons per pixel used. We show how to scale our experimental results for the efficiency of the cesium correlator to images containing a larger number of pixels.

© 1994 Optical Society of America

History
Original Manuscript: June 10, 1994
Published: November 1, 1994

Citation
Ivan Biaggio, B. Ai, R. J. Knize, Jouni P. Partanen, and Robert W. Hellwarth, "Optical correlator that uses cesium vapor," Opt. Lett. 19, 1765-1767 (1994)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-19-21-1765


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