Resonant Raman scattering by adsorbed molecules

Abstract

We extend the classical model used in our previous work, to discuss the resonant Raman scattering by a molecule located near a metallic surface. We use the Drude model, modified to incorporate the electrodynamic effects of the surface. The frequency dependence of the polarizability is substantially modified and this lowers the frequency at which the resonant Raman effect appears. We derive the intensity of the fundamental and that of the overtones, for resonant scattering, and exemplify numerically their behavior.