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

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

We theoretically investigate polarization and intensity all-optical bi-and tri-stability in
interference structures that include both a birefringent LiNbO3 layer of varying …

An active stabilization of photorefractive two-wave coupling by means of an electronic
feedback loop has been used extensively during recent years in transmission geometry. It …

A cw mirrorless oscillation is observed in a photorefractive LiNbO_3: Cu crystal when the
crystal is exposed to two nearly counterpropagating pump waves from an Ar^+ laser. This …

We investigate spatio-temporal dynamics in the interaction of counterpropagating self-
trapped beams in a photorefractive strontium barium niobate crystal. While the interaction of …

The exchange of informations at high data rates between optoelectronic transducers is an
important task encountered in all advanced architectures of high capacity parallel optical …