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Second-harmonic generation from embedded polarization sheets

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Abstract

We consider surface second-harmonic (SH) generation in terms of both a phenomenological description and a microscopical model. As sample serve Langmuir-Blodgett-type monolayers of perfect rotational symmetry around the surface normal. Their second-order susceptibility was determined with high precision by evaluation of the angle-of-incidence dependence in Fresnel reflection and in total internal reflection. The appropriate microscopical model requires embedding of the polarization sheet responsible for SH emission into a uniform medium of permittivity ɛm(ω) and ɛm(2ω) with ɛm(ω)/ɛm(2ω)≠1. The implications for the derivation of molecular average tilt angles from susceptibility ratios are also discussed.

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Sieverdes, F., Pinnow, M. & Marowsky, G. Second-harmonic generation from embedded polarization sheets. Appl. Phys. B 54, 95–97 (1992). https://doi.org/10.1007/BF00331740

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  • DOI: https://doi.org/10.1007/BF00331740

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