Spatial solitons and light-induced instabilities in colloidal media.
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We study nonlinear light propagation in colloidal nanosuspensions. We introduce a novel model for the nonlinear response of colloids which describes consistently the system in the regimes of low and high light intensities and low/large concentrations of colloidal particles. We employ this model to study the light-induced instabilities and demonstrate the formation of stable spatial solitons as well as the existence of a bistability regime.
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Matuszewski, Michał||Krolikowski, Wieslaw||Kivshar, Yuri S