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Proceedings Paper

Multiple peaks due to EIT and Autler-Townes effect in lambda-probing of the strongly driven 5P[sub]3/2[/sub] manifold of cold 85 Rb atoms in MOT
Author(s): E. Paul-Kwiek; M. Głódź; K. Kowalski; J. Szonert; S. Gateva; K. Vaseva
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Paper Abstract

Electromagnetically induced transparency (EIT) and Autler-Townes (A-T) effect were studied under conditions of strong coupling of the hyperfine manifold 5P3/2 (F') with the 5S 1/2 (F=2) ground state of cold 85Rb atoms in MOT. Transmission spectra of a weak probe beam, at the frequency scanned in the vicinity of the 5S1/2(F=3)→5P3/2(F') resonances were registered at various frequency settings of the coupling beam. The spectra were interpreted by applying optical Bloch equations. As a starting point, a 5-level model, accounting for F=2, 3 and F'=1, 2, 3 states was assumed (the noncoupled state F'=4 being neglected, but the F'=1 state, coupled but not directly probed, included, as its presence was found to be imprinted in the spectra). Such a model alone does not reproduce all the spectral features observed. Therefore we have considered the existence of the polarized light induced transitions between Zeeman substates, involving (F'=2, m') and (F'=3, m') upper states. In order to indirectly account for the m→m' absorption transitions to the non-coupled m' states, and to the pairs of states with incomplete coupling, we have complemented the results of the 5-level model with the ones of its reduced versions. Satisfactory agreement of the positions of respective modeled and experimental spectral peaks was achieved.

Paper Details

Date Published: 17 January 2011
PDF: 10 pages
Proc. SPIE 7747, 16th International School on Quantum Electronics: Laser Physics and Applications, 77470I (17 January 2011); doi: 10.1117/12.883020
Show Author Affiliations
E. Paul-Kwiek, Pomeranian Univ. in Slupsk (Poland)
M. Głódź, Institute of Physics (Poland)
K. Kowalski, Institute of Physics (Poland)
J. Szonert, Institute of Physics (Poland)
S. Gateva, Institute of Electronics (Bulgaria)
K. Vaseva, Institute of Electronics (Bulgaria)

Published in SPIE Proceedings Vol. 7747:
16th International School on Quantum Electronics: Laser Physics and Applications
Tanja Dreischuh; Dimitar Slavov, Editor(s)

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