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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 15, Iss. 7 — Jul. 1, 1998
  • pp: 2065–2069

Hexagon formation in photorefractive crystals as mirrorless coherent oscillation

Y. Uesu, A. Ueno, M. Kobayashi, and S. Odoulov  »View Author Affiliations


JOSA B, Vol. 15, Issue 7, pp. 2065-2069 (1998)
http://dx.doi.org/10.1364/JOSAB.15.002065


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Abstract

The spontaneous appearance of hexagon patterns in photorefractive crystals is treated as mirrorless coherent four-wave mixing oscillation. It is shown experimentally that the system has a well-defined coupling-strength threshold and behaves as other coherent optical oscillators near the threshold. A simple relation for the angle of the hexagon sideband as a function of the distance between the end mirror and the sample is derived and verified experimentally.

[Optical Society of America ]

OCIS Codes
(050.7330) Diffraction and gratings : Volume gratings
(070.5040) Fourier optics and signal processing : Phase conjugation
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(190.5330) Nonlinear optics : Photorefractive optics

Citation
Y. Uesu, A. Ueno, M. Kobayashi, and S. Odoulov, "Hexagon formation in photorefractive crystals as mirrorless coherent oscillation," J. Opt. Soc. Am. B 15, 2065-2069 (1998)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-15-7-2065


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