Theory of resonance scattering and absorption of strong coherent radiation by thermally relaxing multilevel atomic systems
- 1 May 1979
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 19 (5), 2056-2073
- https://doi.org/10.1103/physreva.19.2056
Abstract
The resonant response of a multilevel atomic system to strong coherent radiation is analyzed using an extension of the methods of time-independent scattering theory, adapted to the density-matrix formalism in order to include thermal bath effects. General steady-state expressions are derived for self-attenuation and resonance scattering rates in strong saturating fields, as functions of the coupling strengths, relaxation parameters, and frequency detunings. Formal expressions are given for radiative-damping and collision-broadening relaxation parameters, relating the latter to scattering amplitudes. Modifications of collision-broadening parameters by the presence of very strong fields are discussed. The Bloch equations are derived by transformation to the time domain, under specified conditions.Keywords
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