Application of classical models of chirality to surface second harmonic generation

Abstract : Two classical models (Kuhn and Kauzmann) are extended to calculate the second-order nonlinear response of an isotropic layer of chiral molecules. Calculation of the various nonlinear susceptibilities (electric dipolar, magnetic dipolar, and electric quadrupolar) is performed and applied to the derivation of the second harmonic field radiated by the molecules. It is shown that the two models give strikingly different results about the origin of the chiral response in such experiments. Previously published results are analyzed in view of this calculation which allows to understand the different interpretations proposed. This calculation emphasizes the interest of surface second harmonic generation to access information about the microscopic origin of optical activity in chiral molecules. © 2001 American Institute of Physics.
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François Hache, H. Mesnil, Marie-Claire Schanne-Klein. Application of classical models of chirality to surface second harmonic generation. Journal of Chemical Physics, American Institute of Physics, 2001, 115 (14), pp.6707. ⟨10.1063/1.1404983⟩. ⟨hal-00837033⟩

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