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

Light-induced variation in the refractive index of the polyimide-C-70 syste m is studied. This process makes a contribution to the nonlinear transmissi on of this system in the study of the optical limitation of laser radiation and determines the prospects of using this system as a nonlinear holograph ic medium for reversible data storage. The nonlinear optical coefficients n (2) and chi ((3)) of fullerene-sensitized polyimides are determined for the first time by the methods of dynamic holography. (C) 2001 MAIK "Nauka/Inte rperiodica".