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We report the study of the temporal dependence of the non-linear optical response of novel organic materials in solution. The experimental results of the optical Kerr gate using 70fs pulses show a quasi-instantaneous response for three derivatives of an amino-triazole donor–acceptor system. The non-linearity of the compounds is identified as arising from the electronic contribution to the third-order...
We present a method for measuring the magnitude and sign of the nonlinear refractive and absorptive coefficients in isotropic media based on vectorial two-wave mixing. The technique consists of the measurement of the self-diffracted signals as a function of the angle between the linear polarizations of two input pulses. The technique was used to investigate the nonlinear optical response of three...
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