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Applied Optics

Applied 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)

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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

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

W. T. Maloney, "An Ultrasonic Shutter for Noise Reduction in Real-Time Optical Correlators," Appl. Opt. 8, 443-446 (1969)

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