中国物理B ›› 2005, Vol. 14 ›› Issue (4): 725-728.doi: 10.1088/1009-1963/14/4/015

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Observation of EIA in closed and open caesium atomic system

赵建明, 赵延霆, 黄涛, 肖连团, 贾锁堂   

  1. State Key Laboratory of Quantum Optics and Quantum Optics Devices,and College of Physics and Electronics Engineering , Shanxi University, Taiyuan 030006, China
  • 收稿日期:2004-05-26 修回日期:2004-09-10 出版日期:2005-04-20 发布日期:2005-03-28
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10174047, 60378004), and by the Science Foundation for Youth of Shanxi Province, China (Grant Nos 20031004, 20041013).

Observation of EIA in closed and open caesium atomic system

Zhao Jian-Ming (赵建明), Zhao Yan-Ting (赵延霆), Huang Tao (黄涛), Xiao Lian-Tuan (肖连团), Jia Suo-Tang (贾锁堂)   

  1. State Key Laboratory of Quantum Optics and Quantum Optics Devices,and College of Physics and Electronics Engineering , Shanxi University, Taiyuan 030006, China
  • Received:2004-05-26 Revised:2004-09-10 Online:2005-04-20 Published:2005-03-28
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10174047, 60378004), and by the Science Foundation for Youth of Shanxi Province, China (Grant Nos 20031004, 20041013).

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摘要： We present an experimental study on electromagnetically induced absorption (EIA) in the closed transition of a degenerate two-level Cs atomic system.The coupling and probe lasers coupled with the transition 6S1/2 F=4 to 6P3/2F'=5 of caesium atom. The signal of EIA was obtained and the frequency detuning and intensity effect of the pumping laser were experimentally investigated. The EIA signal in 6S1/2 F =4 to 6P3/2F'=4 and 6S1/2 F =4 to 6P3/2F'=3 open transitions was also obtained. As the repumping laser couples with the transition of 6S1/2 F =3 to 6P3/2F'=4, the EIA signal is increased due to the hyperfine optical pumping.

Abstract: We present an experimental study on electromagnetically induced absorption (EIA) in the closed transition of a degenerate two-level Cs atomic system.The coupling and probe lasers coupled with the transition 6S1/2 F=4 $\to$ 6P3/2F'=5 of caesium atom. The signal of EIA was obtained and the frequency detuning and intensity effect of the pumping laser were experimentally investigated. The EIA signal in 6S1/2 F =4 $\to$ 6P3/2F'=4 and 6S1/2 F =4 $\to$ 6P3/2F'=3 open transitions was also obtained. As the repumping laser couples with the transition of 6S1/2 F =3 $\to$ 6P3/2F'=4, the EIA signal is increased due to the hyperfine optical pumping.

Key words: EIA, caesium atom, degenerate, two-level system

中图分类号:  (Level crossing and optical pumping)

  • 32.80.Xx
32.10.Fn (Fine and hyperfine structure) 32.70.-n (Intensities and shapes of atomic spectral lines) 42.60.Fc (Modulation, tuning, and mode locking) 42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation)