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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 14, Iss. 10 — Oct. 1, 1997
  • pp: 2641–2649

Photorefractive nonlinearity of periodically poled ferroelectrics

B. Sturman, Marı́a Aguilar, F. Agulló-López, V. Pruneri, and P. G. Kazansky  »View Author Affiliations


JOSA B, Vol. 14, Issue 10, pp. 2641-2649 (1997)
http://dx.doi.org/10.1364/JOSAB.14.002641


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Abstract

We study theoretically the dependence of the photorefractive response of a periodically poled ferroelectric on the spatial frequency of light fringes, on the period of the domain inversion, and on its mark-to-space ratio. The photovoltaic effect, the drift of photoelectrons under an applied field, and their diffusion are considered as charge-transport mechanisms. Strong suppression of the photorefractive properties at low spatial frequencies (reduction of optical damage) together with retention of these properties in a region of short-fringe spacing are shown. We also found that the periodicity of the domain structure can produce a new kind of photorefractive parametric wave coupling. This coupling is characterized by a large gain factor for the waves propagating at angles that depend on the domain-inversion period. Finally, we discuss promising photorefractive experiments in periodically poled lithium niobate.

© 1997 Optical Society of America

Citation
B. Sturman, María Aguilar, F. Agulló-López, V. Pruneri, and P. G. Kazansky, "Photorefractive nonlinearity of periodically poled ferroelectrics," J. Opt. Soc. Am. B 14, 2641-2649 (1997)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-14-10-2641

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