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Phys. Rev. A 67, 033810 (2003) [11 pages]

Theory of dark resonances for alkali-metal vapors in a buffer-gas cell

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A. V. Taĭchenachev1,2,3, V. I. Yudin1,2,3, R. Wynands4,*, M. Stähler4, J. Kitching3, and L. Hollberg3
1Novosibirsk State University, Pirogova 2, Novosibirsk 630090, Russia
2Institute of Laser Physics SD RAS, Novosibirsk 630090, Russia
3Time and Frequency Division, NIST Boulder, 325 South Broadway, Boulder, Colorado 80305
4Institut für Angewandte Physik, Universität Bonn, Wegelerstraße 8, D-53115 Bonn, Germany

Received 7 October 2002; published 21 March 2003

We develop an analytical theory of dark resonances that accounts for the full atomic-level structure, as well as all field-induced effects such as coherence preparation, optical pumping, ac Stark shifts, and power broadening. The analysis uses a model based on relaxation constants, which assumes the total collisional depolarization of the excited state. A good qualitative agreement with the experiments for Cs in Ne is obtained.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.67.033810
DOI:
10.1103/PhysRevA.67.033810
PACS:
42.50.Gy, 32.70.Jz, 32.80.Bx, 33.70.Jg

*Present address: Département de Physique, Université de Fribourg, Chemin du Musée 3, 1700 Fribourg, Switzerland.

 
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