Generalized Einstein B coefficients for coherently driven three-level systems

J. Mompart, R. Corbalán

Research output: Contribution to journalArticleResearchpeer-review

5 Citations (Scopus)

Abstract

Generalized Einstein B coefficients for coherently driven closed three-level systems are introduced by means of the quantum-jump technique. The nonreciprocity between stimulated emission and absorption for both one-photon and two-photon gain and loss processes has been studied and quantified in terms of the rates of the particular incoherent processes present in each three-level system. Some general properties of these generalized Einstein B coefficients have been found. In particular, whenever the generalized Einstein B coefficient for one-photon gain overcomes that for one-photon loss then the generalized Einstein B coefficient for two-photon loss overcomes that for two-photon gain, and vice versa. Finally, we have obtained simple analytical expressions indicating the way to maximize the asymmetry between stimulated emission and absorption coefficients either for one-photon or for two-photon processes. © 2001 The American Physical Society.
Original languageEnglish
Pages (from-to)12
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume63
Issue number6
DOIs
Publication statusPublished - 1 Jun 2001

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