INCOHERENTLY COUPLED SCREENING-PHOTOVOLTAIC SOLITON PAIRS

It is predicted in this paper that incoherently coupled screening-photovoltaic s oliton pairs are possible in biased photovoltaic-photorefractive crystals under steady-state conditions.These soliton pairs are established by the solitary beam s which have the same polarization,wavelength,and are mutually incoherent.The sc reening-photovoltaic soliton pairs can be considered as the united form of scree ning soliton pairs and closed-circuit photovoltaic soliton pairs.They reduce to screening soliton pairs in the absence of photovoltaic effect,whereas they becom e photovoltaic soliton pairs under the closed-circuit condition when the bias fi eld is not applied.