We implement a random-walk scattering model in a nonlinear beam-propagation code to
simulate fanning in photorefractive crystals. The characteristics of the scatterers were …

We present detailed calculations of the temporal and spatial evolution of beam fanning in
photorefractive crystals that is initiated by scattering from noise. We show that fanning starts …

Our experiment shows that stimulated backscattering from photorefractive LiNbO_3: Fe
crystals occurs not only for an orientation of the polar axis that is parallel to the input beam …

Image amplification and beam fanning in a photorefractive medium are described by the
multivariable Langevin equations when the random volume scattering is included owing to …

It is shown that, in photorefractive crystals with a dominating local nonlinear response, small
temporal fluctuations of the space-charge field can induce strong noisy (stochastic) …

Stimulated photorefractive backscattering produces a phase-conjugate wave under some
conditions. Numerical solutions to the time-dependent wave equation for the backscattered …

To describe 19 possible types of conical light-induced scattering in photorefractive crystals,
we propose and develop a phenomenological approach based on two different phase …

We present a comprehensive analysis of the evolution of a grating envelope, in both
transmission and reflection geometry, during the erasure process in various readout …

Using a perturbational-analysis and Fourier-transform techniques, we solve the Kukhtarev
equations to analyze the steady-state and the transient beam fanning in a photorefractive …

The response of photorefractive materials to sinusoidal intensity patterns of high modulation
depths is considered. It is shown that the induced refractive-index response in this regime is …