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 …

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 …

Steady-state and time-resolved off-Bragg-angle diffraction experiments are used to
determine the structure and the dynamics of photorefractive gratings induced by interband …

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 report measurements of response time for the intensity-dependent absorption in a single
BaTiO_3 crystal under conditions in which no photorefractive effect can be observed. The …

We propose and analyze a new type of phase conjugation between counterpropagating
beams in photorefractive materials based on diffraction from transmission gratings only. This …

The intensity-dependent two-wave mixing gain at large modulation depth is measured in a
BaTiO3 crystal. We derive an expression of nonlinear space-charge field from Kukhtarev's …

A model to describe fanning effects in photorefractive crystals is presented. The intensity
distribution of the fanning beam for one incident beam and two incident beams in 45°‐cut …

We present and experimentally demonstrate a new method for enhancing the signal-to-
background ratio of two-wave mixing in photorefractive crystals. The method uses a mutually …

Calibrated optical Bragg‐scattering measurements of the fundamental steady‐state space‐
charge‐field amplitude, and of two higher spatial harmonics, in photorefractive p‐type …