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).


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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

Item Type: Article
Digital Object Identifier (DOI): doi:10.1364/JOSAB.14.002641
ISSNs: 1094-4087 (print)
Related URLs:
ePrint ID: 78020
Date :
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Date Deposited: 11 Mar 2010
Last Modified: 18 Apr 2017 20:25
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