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Optics Letters

Optics Letters


  • 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)

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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

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

Joseph E. Ford, Yeshaiahu Fainman, and Sing H. Lee, "Time-integrating interferometry using photorefractive fanout," Opt. Lett. 13, 856-858 (1988)

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  1. D. Z. Anderson, D. M. Lininger, J. Feinberg, Opt. Lett. 12, 123 (1987). [CrossRef] [PubMed]
  2. M. Cronin-Golomb, A. M. Biernacki, C. Lin, H. Kong, Opt. Lett. 12, 1029 (1987). [CrossRef] [PubMed]
  3. J. Ford, Y. Fainman, S. H. Lee, in Technical Digest on Spatial Light Modulators and Applications (Optical Society of America, Washington, D.C., 1988), p. 40.
  4. Y. Fainman, E. Klancnik, S. H. Lee, Opt. Eng. 25, 228 (1986).
  5. R. A. Rupp, F. W. Drees, Appl. Phys. B 39, 223 (1986). [CrossRef]
  6. Y. Fainman, C. C. Guest, S. H. Lee, Appl. Opt. 25, 1598 (1986). [CrossRef] [PubMed]

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