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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 5, Iss. 12 — Dec. 1, 1988
  • pp: 2467–2472

High-accuracy, high-reflectivity phase conjugation at 1.06 μm by four-wave mixing in photorefractive gallium arsenide

M. B. Klein, S. W. McCahon, T. F. Boggess, and G. C. Valley  »View Author Affiliations


JOSA B, Vol. 5, Issue 12, pp. 2467-2472 (1988)
http://dx.doi.org/10.1364/JOSAB.5.002467


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Abstract

We have used a 20-kHz ac square-wave electric field to enhance the beam-coupling gain and the degenerate four-wave mixing reflectivity of photorefractive GaAs at 1.06 μm. The largest measured four-wave mixing reflectivity in the steady state was 15% at a grating period of 9 μm and an applied voltage of 3.2 kV across 0.4 cm. Theoretical results predict substantially higher reflectivity values for a field of 8 kV/cm; the origin of this discrepancy is thought to be space-charge effects that prevent us from obtaining the full field inside the crystal. We have also measured a transient reflectivity of 510% during the switch on of the backward pump beam. Finally, we have determined the accuracy of wave-front reversal through measurements of piston-error correction and conjugation fidelity.

© 1988 Optical Society of America

History
Original Manuscript: April 29, 1988
Manuscript Accepted: July 25, 1988
Published: December 1, 1988

Citation
M. B. Klein, S. W. McCahon, T. F. Boggess, and G. C. Valley, "High-accuracy, high-reflectivity phase conjugation at 1.06 μm by four-wave mixing in photorefractive gallium arsenide," J. Opt. Soc. Am. B 5, 2467-2472 (1988)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-5-12-2467

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