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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 8, Iss. 2 — Feb. 1, 1969
  • pp: 443–446

An Ultrasonic Shutter for Noise Reduction in Real-Time Optical Correlators

W. T. Maloney  »View Author Affiliations


Applied Optics, Vol. 8, Issue 2, pp. 443-446 (1969)
http://dx.doi.org/10.1364/AO.8.000443


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Abstract

A coherent optical correlator can operate as a generator of complex waveforms when it is driven by a short-duration carrier pulse. However, the poor signal-to-noise ratio which results usually precludes operation in this mode. The ultrasonic shutter described herein can improve the signal-to-noise ratio by a factor approaching the time–bandwidth product of the system. No moving mechanical parts are involved.

© 1969 Optical Society of America

History
Original Manuscript: July 18, 1968
Published: February 1, 1969

Citation
W. T. Maloney, "An Ultrasonic Shutter for Noise Reduction in Real-Time Optical Correlators," Appl. Opt. 8, 443-446 (1969)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-8-2-443


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References

  1. H. R. Carleton, W. T. Maloney, G. Meltz, “Collinear optical heterodyning in optical processors,” submitted to Proc. IEEE.
  2. G. Meltz, W. T. Maloney, Appl. Opt. 7, 2091 (1968). [CrossRef] [PubMed]
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  9. R. M. Wilmotte, U.S. Patent3,111,666; 19November1963.
  10. H. R. Carleton, W. T. Maloney, Proc. IEEE 55, 1077 (1967). [CrossRef]
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  13. L. B. Lambert, in Modern RadarR. S. Berkowitz, Ed. (John Wiley & Sons, Inc., New York, 1965), p. 245.

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