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Natural, purely biological deoxyribonucleic acid (DNA)–green tea extract (GTE) complexes at different concentrations were prepared and characterized for their spectroscopic, fluorescent, linear and nonlinear optical properties. The complexes can be processed into good optical quality thin films by solution casting. They fluoresce when excited in UV absorption band, with a significantly larger quantum...
A technique for the experimental determination of the modulus and the phase of third-order nonlinear optical susceptibility for a molecule solubilized in an isotropic matrix is proposed. The technique requires experimental determination of the concentration dependence of NLO susceptibility. Few examples of the theoretical predictions of the concentration dependence of solution susceptibility are computed...
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