Scattering of Light by Resonating Molecules

Frank A. Novak

Frank A. Novak, Joel M. Friedman, Robin M. Hochstrasser

В. А. Онищук, M.I. Podgoretskii

V. A. Morozov, P. P. Shorygin

Abstract The expressions for the pulse shapes of secondary radiation in the frequency range of Rayleigh scattering and resonance fluorescence and in the range of Raman scattering and shifted resonance fluorescence are obtained on the basis of the quantum treatment of transformation of light pulses, the resonance conditions for Raman and Rayleigh scattering being considerably different. The characteristic cases of different pulse shapes of Raman and Rayleigh scattering are considered for the condition when the molecules are irradiated by light pulses which are shorter then the lifetime of the excited state of the molecule and are weak enough not to result in saturation.

B. A. Zon, Boris G. Katsnelson

A. D. Bulygin, Yu. É. Geints, Aleksandr A. Zemlyanov

Based on the theory of open resonators, we investigate the fluorescence and Raman scattering of light by active molecules from a spherical microparticle in stationary and nonstationary excitation regimes using methods of statistical physics. Temporal and spectral energy characteristics of the resonator’s internal optical field at the Stokes frequency have been found. Expressions for the differential and total cross sections for inelastic scattering by a water droplet have been derived.