中国物理B ›› 2004, Vol. 13 ›› Issue (10): 1669-1673.doi: 10.1088/1009-1963/13/10/016

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Absorption spectroscopy of cold caesium atoms confined in a magneto-optical trap

闫树斌, 刘涛, 耿涛, 张天才, 彭堃墀, 王军民   

  1. State Key Laboratory of Quantum Optics and Quantum Optics Devices, and Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China
  • 收稿日期:2004-03-04 修回日期:2004-04-02 出版日期:2004-10-20 发布日期:2005-06-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 60178006), by the Natural Science Foundation of Shanxi Province (Grant No 20021030).

Absorption spectroscopy of cold caesium atoms confined in a magneto-optical trap

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)   

  1. State Key Laboratory of Quantum Optics and Quantum Optics Devices, and Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China
  • Received:2004-03-04 Revised:2004-04-02 Online:2004-10-20 Published:2005-06-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 60178006), by the Natural Science Foundation of Shanxi Province (Grant No 20021030).

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摘要： 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.

关键词: absorption spectroscopy, caesium atoms, magneto-optical trap (MOT), V-type three-level system, electromagnetically induced transparency (EIT)

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.

Key words: absorption spectroscopy, caesium atoms, magneto-optical trap (MOT), V-type three-level system, electromagnetically induced transparency (EIT)

中图分类号:  (Zeeman and Stark effects)

  • 32.60.+i
42.50.-p (Quantum optics)