Recent developments, both theoretical and experimental, involving the nonlinear
interactions of light in photorefractive crystals are reviewed. When pumped by light beams in …

Another optical nonlinear effect is reported: the transient self-bending of a laser beam within
a photorefractive crystal under an external electric field. It is based on the large drift length of …

Reduced KNb01 crystals are shown to have the fastest photorefractive response times for
applications in the visible wavelength region. Grating build-up times at cw illumination in the …

We deduce the equation describing the refractive index perturbation in photovoltaic
photorefractive crystals produced by the incidence of a focused laser beam and an …

Nonlinear optical wave mixing in photorefractive materials is considered in the framework of
a two-dimensional model. Beam profile deformation is discussed in the case of two-beam …

The possibility of phase conjugate mirrors (PCM's) with reflectivities exceeding unity was
predicted by Yariv and Pepper, I and subsequently observed by Bloom, Liao, and …

Nonlinear photorefractive wave mixing in waveguides provides unusual intermode coupling
effects which are independent of the overall light intensities. We present and demonstrate …

Photorefractive one-transverse-dimensional bright solitons are studied in KNbO3 crystals. A
quantitative condition defining when an experimental beam can be considered as a soliton …

We demonstrate self-trapping of one-dimensional and two-dimensional optical beams in a
photorefractive KNbO_3 crystal. We study the waveguides induced by the self-trapped …

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