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Atomic dynamics in microcavities: Absorption spectra by Green function method

Journal of Optics B: Quantum and Semiclassical Optics, ISSN: 1464-4266, Vol: 2, Issue: 6, Page: R47-R60
2000
  • 6
    Citations
  • 0
    Usage
  • 18
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    6
    • Citation Indexes
      6
  • Captures
    18

Article Description

The method of thermodynamic Green functions is applied to the determination of the susceptibilities and absorption spectra of atoms in microcavities. The method is introduced by its application to an atom in free space, where the well known expression for the spectrum is very simply rederived. The calculations remain simple for more complicated systems, and results are obtained for atoms in single-mode cavities with lossy mirrors and with the additional damping by emission into free-space modes that occurs in open-sided cavities. The expressions for some limiting cases of the general theory are compared with the results of previous work and contact is made with the dressed-state theory. Special consideration is given to an atom placed in a planar microcavity; it is shown that non-Lorentzian spectra may in principle occur but that the parameter values of practical cavities produce Lorentzian spectra with linewidths given by Fermi's golden rule.

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