The Theory of the Optical Autler-Tonnes Effect in Sodium Including Degeneracy and Detuning

  • S. Swain
  • W. A. McClean
Conference paper


Consider an atomic system illuminated by an intense monochromatic laser field tuned to resonance between two isolated atomic levels. According to the Autler-Townes theory (1955) each of the levels will be split into a doublet, the magnitude of the splitting being proportional to the square root of the intensity of the laser field. If one of the levels is connected to a third level by a second weak laser beam, the doublet structure can be probed by monitoring the population of the third level as a function of the frequency of the weak (probe) laser. The theory of this three-level model has been discussed by several authors, two recent examples being Feneuille and Schweighofer, (1975) and Whitley and Stroud (1976).


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Copyright information

© Springer Science+Business Media New York 1978

Authors and Affiliations

  • S. Swain
    • 1
  • W. A. McClean
    • 1
  1. 1.The Queen’ University of BelfastBelfastNorthern Ireland

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