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Photorefractive nonlinearity of periodically poled ferroelectrics

Sturman, B., Aguilar, M., Agulló-López, F., Pruneri, V. and Kazansky, P.G. (1997) Photorefractive nonlinearity of periodically poled ferroelectrics Optics Express, 14, (10), pp. 2641-2649. (doi:10.1364/JOSAB.14.002641).

Record type: Article

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

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Published date: 1997

Identifiers

Local EPrints ID: 78020
URI: http://eprints.soton.ac.uk/id/eprint/78020
ISSN: 1094-4087
PURE UUID: 70cfed70-a469-427c-85bb-7b6e08d4e0bb

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Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:27

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Contributors

Author: B. Sturman
Author: M. Aguilar
Author: F. Agulló-López
Author: V. Pruneri
Author: P.G. Kazansky

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