A laser beam propagating in a photorefractive crystal generates a refractive-index profile
that deflects the beam to one side. This nonlinear deflection can be balanced by total …

A nonlinear optical phenomenon, namely, the surface waves in photorefractive crystals with
a diffusion nonlinearity (of the gradient type), is suggested and analyzed. These waves can …

Self-defocusing of a Gaussian light beam in a bulk photorefractive BaTiGl crystal is
demonstrated. This is a low light intensity process which results from the coupling and power …

Interactions between optical beams incident upon and generated within a photorefractive
material are investigated by numerically solving a set of nonlinear coupled differential …

We show analytically and numerically that the refractive-index gratings produced by the
photorefractive effect need not be of the same periodicity as the driving light intensity. Even …

It is shown that power exchange is possible in photorefractive materials even though the
grating produced by the two incident waves is in phase with their interference pattern. The …

Special features of light-induced scattering of radiation (λ= 0.44 μm) with extraordinary
polarisation in the SBN-75 photorefractive crystal are studied in detail and an efficient …

Propagation of the light beam in a thin photorefractive crystal with the diffusion-type
mechanism of nonlinearity has been studied both experimentally and theoretically. Total …

A model to describe the fanning effect based on the beam-coupling mechanism in
photorefractive crystals is presented. The intensity distribution of the fanning beam in a 45° …

We consider a steady-state nonlinear photorefractive surface wave (PR SW) with TE or TM
polarisation when the refractive index of the photorefractive crystal (PRC) depends on the …