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Abstract In a recent Letter,[1] Yeh presents a derivation of the response time of a
photorefractive material and asserts that this response time is a fundamental limiting value …

We report on the experimental observation of the modulational instability of quasi-plane-
wave beams in the self-defocusing photorefractive crystal LiNbO 3: Fe. Our analysis shows …

We demonstrate the nonlinear recovery of diffused images in a self-focusing photorefractive
medium. The method is based on the convolution property of nonlinearity, in which related …

We present a novel configuration of an interferometer which is implemented by using
vectorial wave mixing in the orthogonal geometry of wave interaction in a cubic …

We consider the process of nonstationary enhancement of the photorefractive effect through
the application of time-varying (square-wave) electric fields. By examining the full second …

We analyze vectorial wave mixing in a photorefractive crystal of cubic symmetry in different
geometries of beam interactions--reflection, transmission, and orthogonal. It is shown that …

We investigate asymmetric stimulated photorefractive scattering (fanning) in the framework
of a two-dimensional model, based on the solution of nonlinear material equations and …

It is shown that counterpropagation of two light beams in a photorefractive medium can be
unstable against spontaneous emission of light waves of the same frequency and …

We report measurements of the photorefractive phase shift and coupling constant of several
photorefractive materials. We solve the problem of beam coupling and diffraction in a …