Time-domain violation of the optical Bloch equations for solids

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DOIResolve DOI: https://doi.org/10.1103/PhysRevB.48.6903
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Name affiliation
  1. National Research Council of Canada. NRC Institute for Microstructural Sciences
FormatText, Article
Journal titlePhysical Review B
ISSN0163-1829
1095-3795
Volume48
Issue10
Pages6903–6907
Abstract
Recent studies of the failure of the optical Bloch equations (OBE) in describing optical saturation in a solid are extended to test another aspect of the OBE, namely the time dependence of free-induction decay (FID) predicted by the SWB theorem on optical transients [Schenzle, Wong, and Brewer, Phys. Rev. A 22, 635 (1980)]. This theorem states that, following an arbitrarily shaped excitation pulse of length T, the FID will vanish at time T following the end of the excitation pulse. Experiments with ruby violate SWB in that FID decay at least twice as long as the excitation pulse is observed. Numerical and analytical calculations using a Gauss-Markov model for the modified OBE show an extended FID decay, however, the theoretical decay shape does not agree with experiment. Thus as with earlier studies on saturation broadening, we find that the modified OBE provides only a qualitative description of radiation-atom interaction in a solid.
Publication date
PublisherAPS
NoteErratum published in volume 49, issue 9, page 6436, 1 March 1994. DOI: 10.1103/PhysRevB.49.6436.2
LanguageEnglish
Peer reviewedYes
NPARC number23002911
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