Variation of inverse Raman spectrum near resonance

Abstract
The inverse Raman band shape in the vicinity of single photon resonance is interpreted in terms of both a double quantum transition and a dynamical Stark effect. It is pointed out that what is measured in the inverse Raman spectroscopy is not identical with what is measured in the corresponding Raman gain spectroscopy. The absorption change due to the dynamical Stark effect is shown to explain well the band shape as well as the position of the inverse Raman spectrum.