Line-shape of dark line and maser emission profile in CPT
- Cite this article as:
- Levi, F., Godone, A., Vanier, J. et al. Eur. Phys. J. D (2000) 12: 53. doi:10.1007/s100530070042
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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.