Objective
The project is focused on the solution of a number of fundamental problems which have arisen recently in the physics of photorefractive phenomena, challenging the concepts accepted in this field. Common features of the particular problems are the prime role of the material nonlinearity and the direct connection with potential applications. Our interest lies:
in achieving 100 % diffractivity of spatial gratings within a finite time in
schemes with phase feedback
in stabilization of photorefractive processes with this feedback loop
in consequences of the instability of the fundamental solution for the
space-charge field against doubling and quasidoubling of the period
in mechanisms of wave coupling in forbidden optical configurations
in the spectral structure of the light patterns arising due to the
transverse instability of conterpropagation. We intend to explain the above outlined phenomena, to investigate their distinctive features, and to demonstrate possible applications of the results for stabilization of the photorefractive recording and fixing. Theoretical and experimental methods will be combined to solve these problems.
Topic(s)
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49069 Osnabrück
Germany