https://doi.org/10.1007/s100530070042
Line-shape of dark line and maser emission profile in CPT
1
Istituto elettrotecnico Nazionale "G. Ferraris", Str. delle Cacce 91, 10135 Torino, Italy
2
Département de Physique, Université de Montréal, Montréal, QUE, Canada
3
Politecnico di Torino, C.so duca degli Abruzzi 27, Torino, Italy
4
Università di Firenze, LENS, Largo E. Fermi 2, Firenze, Italy
Received:
3
March
2000
Revised:
10
April
2000
Published online: 15 October 2000
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
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000
