Absorption, Emission, and Scattering in Weak Fields

D. V. Skobelʹt︠s︡yn

D. I. Blokhint︠s︡ev

Joachim Oxenius

A. G. Faǐnshteǐn, Nikolai L. Manakov, Л. П. Рапопорт

For the model of a plane rotator in an intense circularly polarised wave the response of the quantum system to the intense field and a weak monochromatic perturbation is obtained. The authors calculate the cross sections for coherent and Raman scattering of the strong field and cross sections for elastic and inelastic scattering and absorption and emission of the weak field.

F. A. Vorob'ev, R. I. Sokolovskiǐ

Keith R. Burnett, J. Cooper

The effect of correlations between an absorber atom and perturbers in the binary-collision approximation are applied to degenerate atomic systems. A generalized absorption profile which specifies the final state of the atom after an absorption event is related to the total intensities of Rayleigh scattering and fluorescence from the atom. It is suggested that additional dynamical information to that obtainable from ordinary absorption experiments is required in order to describe redistributed atomic radiation. The scattering of monochromatic radiation by a degenerate atom is computed in a binary-collision approximation; an equation of motion is derived for the correlation function which is valid outside the quantum-regression regime. Solutions are given for the weak-field conditions in terms of generalized absorption and emission profiles that depend on the indices of the atomic multipoles.