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

E. Paul-Kwiek; M. Głódź; K. Kowalski; J. Szonert; S. Gateva; K. Vaseva

doi:10.1117/12.883020

17 January 2011 Multiple peaks due to EIT and Autler-Townes effect in lambda-probing of the strongly driven 5P_3/2 manifold of cold ⁸⁵Rb atoms in MOT

E. Paul-Kwiek, M. Głódź, K. Kowalski, J. Szonert, S. Gateva, K. Vaseva

Author Affiliations +

Proceedings Volume 7747, 16th International School on Quantum Electronics: Laser Physics and Applications; 77470I (2011) https://doi.org/10.1117/12.883020
Event: XVI International School on Quantum Electronics: Laser Physics and Applications, 2010, Nessebar, Bulgaria

Abstract

Electromagnetically induced transparency (EIT) and Autler-Townes (A-T) effect were studied under conditions of strong coupling of the hyperfine manifold 5P_3/2 (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 5S_1/2(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.

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E. Paul-Kwiek, M. Głódź, K. Kowalski, J. Szonert, S. Gateva, and K. Vaseva "Multiple peaks due to EIT and Autler-Townes effect in lambda-probing of the strongly driven 5P_3/2 manifold of cold ⁸⁵Rb atoms in MOT", Proc. SPIE 7747, 16th International School on Quantum Electronics: Laser Physics and Applications, 77470I (17 January 2011); https://doi.org/10.1117/12.883020

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