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Proceedings Paper

Line shapes and widths of CPT resonances: effect of laser beam profile in open atomic system
Author(s): M. Radonjić; D. Arsenović; Z. Grujić; B. M. Jelenković
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Paper Abstract

This work is concerned with the line profiles, amplitudes and widths of the coherent population trapping (CPT) resonances due to low frequency Zeeman coherences, in the Hanle configuration, applied to 87Rb atoms in the vacuum cell. Detailed calculations of the fluorescence were done with two different transverse intensity profiles of the excitation laser tuned to the open Fg = 2 → Fe = 1 transition. Comparison with experiment produces good agreement for the laser intensity dependence of CPT line-widths in the wide range of the laser intensity, when the laser transverse beam profile is Gaussian. Results for both step-like and Gaussian profile of the laser beam show asymptotic 1/√d dependence (d is the laser beam diameter) of CPT line-widths, for large range of the laser intensity.

Paper Details

Date Published: 19 December 2008
PDF: 9 pages
Proc. SPIE 7027, 15th International School on Quantum Electronics: Laser Physics and Applications, 70270N (19 December 2008); doi: 10.1117/12.822462
Show Author Affiliations
M. Radonjić, Institute of Physics (Serbia)
D. Arsenović, Institute of Physics (Serbia)
Z. Grujić, Institute of Physics (Serbia)
B. M. Jelenković, Institute of Physics (Serbia)


Published in SPIE Proceedings Vol. 7027:
15th International School on Quantum Electronics: Laser Physics and Applications
Tanja Dreischuh; Elena Taskova; Ekaterina Borisova; Alexander Serafetinides, Editor(s)

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