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Line-shape of dark line and maser emission profile in CPT

  • F. Levi
  • A. Godone
  • J. Vanier
  • S. Micalizio
  • G. Modugno

Abstract:

The paper is concerned with the line shapes of resonance phenomena observed in Coherent Population Trapping (CPT) applied to alkali atoms in a cell containing a buffer gas. Significant asymmetries and departures from a Lorentzian shape have been observed in connection with the measurement of dark lines and CPT maser emission profiles. Measurements are reported as a function of the power and frequency tuning of the laser used to create the CPT phenomenon. The paper reports on different experimental conditions and a comparison between theory and experiments is made for the cases of cesium and rubidium in a buffer gas.

PACS. 32.70.Jz Line shapes, widths, and shifts – 42.50.Gy Effects of atomic coherence on propagation, absorption, and amplification of light 

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Copyright information

© EDP Sciences, Springer-Verlag, Società Italiana di Fisica 2000

Authors and Affiliations

  • F. Levi
    • 1
  • A. Godone
    • 1
  • J. Vanier
    • 2
  • S. Micalizio
    • 3
  • G. Modugno
    • 4
  1. 1.Istituto elettrotecnico Nazionale “G. Ferraris”, Str. delle Cacce 91, 10135 Torino, ItalyIT
  2. 2.Département de Physique, Université de Montréal, Montréal, QUE, CanadaCA
  3. 3.Politecnico di Torino, C.so duca degli Abruzzi 27, Torino, ItalyIT
  4. 4.Università di Firenze, LENS, Largo E. Fermi 2, Firenze, ItalyIT

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