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Proceedings Paper

Coherent laser spectroscopy of rubidium atoms
Author(s): S. Mitra; M. M. Hossain; B. Ray; P. N. Ghosh; S. Cartaleva; D. Slavov
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Paper Abstract

Laser spectroscopy experiments are reported on rubidium atoms by using two or three external cavity diode lasers to study multiple resonance transitions in Λ- and V-type systems as well as on (Λ+V)-type system. Electromagnetically induced transparency (EIT) peaks having sub-natural line-widths are found on the Doppler broadened transmission backgrounds with velocity selective enhanced absorption dips. In the presence of a pump laser, probe spectrum shows enhancement of EIT signal by tuning the control laser frequency when the Λ- and V-type EIT signals are made to overlap. Theoretical analysis is carried out by solving the optical Bloch equations for five-level atomic model under Λ configuration. With the numerically simulated spectra, variation of EIT transmission peak with ground state decay rate and excited state spontaneous decay rate are investigated. Effect of pump Rabi frequency on the transmission peak is also shown.

Paper Details

Date Published: 17 January 2011
PDF: 9 pages
Proc. SPIE 7747, 16th International School on Quantum Electronics: Laser Physics and Applications, 77470B (17 January 2011); doi: 10.1117/12.884569
Show Author Affiliations
S. Mitra, Univ. of Calcutta (India)
M. M. Hossain, Univ. of Calcutta (India)
B. Ray, Univ. of Calcutta (India)
P. N. Ghosh, Jadavpur Univ. (India)
S. Cartaleva, Institute of Electronics (Bulgaria)
D. Slavov, 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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