EVOLUTION OF SPATIAL OPTICAL SOLITONS IN BIASED PHOTOREFRACTIVE MEDIAUNDER STEADY-STATE CONDITIONS

The dynamical evolution of bright spatial solitons in biased photorefr active crystals is investigated under steady-state conditions. Our num erical study indicates that these optical solitons are stable against small perturbations whereas optical beams that significantly differ fr om soliton solutions tend to experience larger cycles of compression a nd expansion. The influence of loss in a typical photorefractive mater ial like SBN:60 is studied in detail. The effect of the external bias field on the self-focusing behavior of optical beams is discussed and the interaction forces among optical solitons are also investigated.