Abstract
Abstract A film of composite poly(N-vinylzarbazole): [[4-(dodecanecyl-methylamino) phenyl]methylene]-propanedinitrile: C60 was proven to possess attractive photorefractive properties with fast response time. The diffraction efficiency was fitted to the square of a biexponential formula and the fast response time was deduced to be 12 ms at an erasing beam intensity of 1 W/cm2. Meanwhile, the strong photorefractive effect was maintained. An amplitude of index grating as large as 3.1 × 10−3 at an electric field of 78 V/μ and fitted a two-beam coupling gain coefficient of 43 cm−1 at 57 V/μ were observed.
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