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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 31, Iss. 11 — Apr. 10, 1992
  • pp: 1783–1786

Stable photorefractive square-law conversion using moving grating techniques

Frederick Vachss, John Hong, Scott Campbell, and Dave Cordeiro  »View Author Affiliations


Applied Optics, Vol. 31, Issue 11, pp. 1783-1786 (1992)
http://dx.doi.org/10.1364/AO.31.001783


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Abstract

We demonstrate a technique by which the temporal oscillations in the response of a photorefractive square-law converter, a recently developed high-contrast spatial light modulator, may be removed. This technique uses the translation of an amplitude grating incoherently imaged upon a photorefractive crystal to obtain a moving intensity pattern within the material. We thus obtain running-wave effects similar to those seen by previous investigators writing photorefractive gratings by using the interference of two coherent frequency-shifted beams. We show both theoretically and experimentally that the criteria for removing temporal oscillations simultaneously yields a significant improvement in the diffraction efficiency of the square-law converter.

© 1992 Optical Society of America

History
Original Manuscript: March 18, 1991
Published: April 10, 1992

Citation
Frederick Vachss, John Hong, Scott Campbell, and Dave Cordeiro, "Stable photorefractive square-law conversion using moving grating techniques," Appl. Opt. 31, 1783-1786 (1992)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-31-11-1783

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