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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 13, Iss. 10 — Oct. 1, 1988
  • pp: 856–858

Time-integrating interferometry using photorefractive fanout

Joseph E. Ford, Yeshaiahu Fainman, and Sing H. Lee  »View Author Affiliations


Optics Letters, Vol. 13, Issue 10, pp. 856-858 (1988)
http://dx.doi.org/10.1364/OL.13.000856


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Abstract

We have experimentally demonstrated a single-beam interferometer that effectively subtracts an exponentially weighted history of the input from the current value, thus functioning as a novelty filter. The single-beam interferometer uses signal depletion due to noise amplification (fanout) in a specially cut crystal of photorefractive BaTiO3. To demonstrate its real-time operation we used a Hughes liquid-crystal light valve to convert a video image into a phase- and/or amplitude-modulated input signal. Potential applications of this interferometer include image-clutter removal, motion detection and tracking, edge enhancement, and image time differentiation.

© 1988 Optical Society of America

History
Original Manuscript: May 6, 1988
Manuscript Accepted: June 27, 1988
Published: October 1, 1988

Citation
Joseph E. Ford, Yeshaiahu Fainman, and Sing H. Lee, "Time-integrating interferometry using photorefractive fanout," Opt. Lett. 13, 856-858 (1988)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-13-10-856

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