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An organic polymer composite film, BBDT/PMMA, was prepared. Its linear and nonlinear optical properties were characterized using prism coupler(SPA-4000, Korea) and Z-scan technique. The results show that the film exhibits a great nonlinear optical response.
A dmit2- salt ([(C4H9)4N]Au(dmit)2) was synthesized and its acetone solution's third-order nonlinear optical properties were investigated by Z-scan technique using a pulsed laser with 28 ps duration and 10 Hz repetition at 532 nm. The second-order hyperpolarizability for its molecular was estimated to be as large as 2.74×10−31 esu.
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