The introduction of certain electronic feedback loops into photorefractive wave-coupling
schemes makes them noise free and leads to dramatic changes of the whole nonlinear …

We show that a certain phase feedback between output and input changes dramatically the
characteristics of photorefractive two-beam coupling. The diffraction efficiency of the …

Using the distinctive features of the photorefractive nonlinearity, we derive a general self-
consistent set of equations to describe two-wave coupling in the presence of fast and …

We investigate the physics of a novel nonlinear system, feedback controlled photorefractive
beam coupling. Inertia of the electronic feedback is found to be an element crucial for …

We investigate analytically and numerically the influence of the type of the photorefractive
nonlinear response on the periodic states (attractors) which occur during feedback …

We investigate theoretically and experimentally the operation of a nonlinear system,
feedback controlled photorefractive beam coupling. It is shown that the feedback equations …

We present a closed-form solution for the two-wave coupling process, resulting in a solution
with an interesting part, the arbitrary function??(t), not being considered in the previous …

We report theoretical and experimental evidence for transverse modulational instability of
two counterpropagating beams in a photorefractive medium with no external feedback. A …

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 …

We investigate the spatial structure of dynamic index and light gratings which arise during
feedback-controlled photorefractive beam coupling with ultimate diffraction parameters. It is …