We show that manipulation and selection of optical patterns is possible by detuning the
frequency of one of the two waves in counterpropagating photorefractive two-wave mixing …

Experimental observations are reported which demonstrate that the response time for beam
fanning, self-pumped phase conjugation, and double phase conjugation can be shortened …

We investigate contradirectional two-wave mixing with partially coherent waves in
photorefractive crystals. By use of a statistical theory on linear systems, a general …

In general, the application of an electric field to a photorefractive material with optical activity
results in a change in the effective electro-optic coefficient, r eff, which, in turn, alters the …

A theoretical analysis is presented of two-wave mixing in photorefractive materials in which
the complex amplitude of a weak signal beam has slowly varying but otherwise arbitrary …

We describe a new method for photorefractive response time measurement in fast
photorefractive crystals based on continuous phase modulation in two-wave mixing. We …

We show that incoherently coupled soliton pairs are possible in biased photorefractive
crystals, under steady‐state conditions. These solitons can propagate in bright‐bright, dark …

Using a new experimental geometry, we have proved for the first time that the generation of
spatial subharmonic gratings in photorefractive crystals is not dependent on optical …

We investigate propagation of light beams in photorefractive media by direct numerical
simulation. The two dimensional model is based on solution of nonlinear material equations …

We show that the dielectric grating induced by an external probe in a photorefractive crystal
with the period of the external probe can be unstable against period multiplication. We …