Abstract Absorption spectra of cold caesium atoms confined in a magneto-optical trap are measured around $D_2$ line at 852nm with a weak probe beam. Absorption reduction dip due to electromagnetically induced transparency (EIT) effect induced by the cooling/trapping field in a V-type three-level system and a gain peak near the cycling transition are clearly observed. Several mechanisms mixed with EIT effect in a normal V-type three-level system are briefly discussed. A simple theoretical analysis based on a dressed-state model is presented for interpretation of the absorption spectra.
Received: 04 March 2004
Revised: 02 April 2004
Accepted manuscript online:
Fund: Project supported by the National Natural Science Foundation of China (Grant No 60178006), by the Natural Science Foundation of Shanxi Province (Grant No 20021030).
Cite this article:
Yan Shu-Bin (闫树斌), Liu Tao (刘涛), Geng Tao (耿涛), Zhang Tian-Cai (张天才), Peng Kun-Chi (彭堃墀), Wang Jun-Min (王军民) Absorption spectroscopy of cold caesium atoms confined in a magneto-optical trap 2004 Chinese Physics 13 1669
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