Abstract

Hyper-Rayleigh scattering has been used to characterize the nonlinear optical properties of polymeric materials. This new technique has been applied both on synthetic polymers with nonlinear optical chromophores covalently attached to a polymer backbone and on biopolymers with one single chromophore embedded in a protein matrix. We demonstrate the hyper-Rayleigh scattering can be used to determine the molecular hyperpolarizability of the pending side chain chromophore in synthetic polymers. No evidence of orientational correlation between the side chains was observed for chromophore loading levels up to 22%. Hyper-Rayleigh scattering was also used to determine the first hyperpolarizability of a charged protein.

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