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Proceedings Paper

New narrow resonance in the fluorescence of closed optical transition observed in nanometric Cs-vapor layers
Author(s): S. Cartaleva; A. Sargsyan; D. Sarkisyan; D. Slavov; K. Vaseva
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Paper Abstract

In this communication we report the first observation of a narrow, reduced fluorescence dip in the profile of the completely closed transition on the D2 line of 133Cs vapor, confined in Extremely Thin Cell with nanometric thickness. The theoretical modeling of the fluorescence based on the Optical Bloch Equation for two-level atomic system, shows that the narrow dip in the fluorescence could be attributed to a very small loss in the excitation process of the examined degenerate transition. While the population in the atomic system remains constant, the depolarization of the excited level can lead to some loss in the efficiency of the optical transition excitation. Under the conditions of our experiment, no dip in the fluorescence is registered for the cell thickness where a well pronounced Dicke peak in the absorption takes place. For the cells with nanometric thickness, the previous investigations demonstrate that the fluorescence profiles of optical transitions differ significantly from the absorption profiles. However, our experiment shows that some traces of the coherent Dicke process contributing to the absorption line still remain in the fluorescence, which is result of non-coherent processes.

Paper Details

Date Published: 17 January 2011
PDF: 8 pages
Proc. SPIE 7747, 16th International School on Quantum Electronics: Laser Physics and Applications, 77470H (17 January 2011); doi: 10.1117/12.885689
Show Author Affiliations
S. Cartaleva, Institute of Electronics (Bulgaria)
A. Sargsyan, Institute for Physical Research (Armenia)
D. Sarkisyan, Institute for Physical Research (Armenia)
D. Slavov, 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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