Authors

M. Alexanian;S. K. Bose

Comments

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Abbreviated Journal Title

Phys. Rev. A

Keywords

3-LEVEL ATOM; SPONTANEOUS EMISSION; TRANSFORMATION; CONFIGURATION; MICROSCOPY; QUANTUM; MODEL; BEAM; Optics; Physics, Atomic, Molecular & Chemical

Abstract

We present a theory of two-photon resonance fluorescence of an atom or molecule in which the excitation by an external electromagnetic field as well as fluorescence emission is mediated by two-photon processes. The treatment is based on first dressing the atom or molecule by the external field and then evaluating perturbatively the effect of the interaction with the vacuum or fluorescent field and so resonance fluorescence can be considered as spontaneous emission from the dressed atom. The introduction of the combined system of atom and external field via dressed states leads to simpler calculations and more transparent physics. The fluorescence spectrum derived by us has similarities as well as differences with that of one-photon resonance fluorescence and earlier theoretical predictions for the two-photon case.

Journal Title

Physical Review A

Volume

74

Issue/Number

6

Publication Date

1-1-2006

Document Type

Article

Language

English

First Page

9

WOS Identifier

WOS:000243166700108

ISSN

1050-2947

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