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De Gruyter eBooks

A Study of the Exchange-Determined Absorption Lineshape outside the Lorentzian Region

G. Cusumano, GORDON J. TROUP

Published Dec 31, 1974• 0 citations
Publisher
DOI
10.1515/9783112501948-024

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We investigate the structure of the dispersion and absorption lineshapes for driven two-level systems against a weak probing laser field. It is shown that the shape of both curves depends critically on the detuning of the driving laser to the atomic resonance frequency and can be transformed continuously and oppositely between Rayleigh (or ‘dispersion-like’) and Lorentzian (or ‘absorption-like’) lineshapes. An analysis in the dressed state basis explains these features via the different influences of coherences and populations of the corresponding dressed states.