Double Resonance in Fluorescent and Raman Scattering by Molecules in Small Particles

Abstract

It is pointed out that in fluorescent and Raman scattering by molecules in or near a small particle, large enhancements in the scattered signals are obtained when both the incident and the fluorescent frequencies coincide with eigenfrequencies of the particle. Numerical results are presented for spherical particles with a refractive index $2.2+0.409\times {10}^{-2\mathrm{}}i$ uniformly filled with fluorescent scatterers. The effects are found to be substantial.