Light-induced variation in the refractive index in a polyimide-fullerene system

Light-induced variation in the refractive index of the polyimide-C 70 system is studied. This process makes a contribution to the nonlinear transmission of this system in the study of the optical limitation of laser radiation and determines the prospects of using this system as a nonlinear holographic medium for reversible data storage. The nonlinear optical coefficients n 2 and χ (3) of fullerene-sensitized polyimides are determined for the first time by the methods of dynamic holography.