中国物理B ›› 2016, Vol. 25 ›› Issue (11): 114203-114203.doi: 10.1088/1674-1056/25/11/114203

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Theoretical simulation of 87Rb absorption spectrum in a thermal cell

Hong Cheng(成红), Shan-Shan Zhang(张珊珊), Pei-Pei Xin(辛培培), Yuan Cheng(程元), Hong-Ping Liu(刘红平)   

  1. 1 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2016-06-08 修回日期:2016-07-07 出版日期:2016-11-05 发布日期:2016-11-05
  • 通讯作者: Hong-Ping Liu E-mail:liuhongping@wipm.ac.cn
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant No. 2013CB922003) and the National Natural Science Foundation of China (Grant Nos. 91421305, 91121005, and 11174329).

Theoretical simulation of 87Rb absorption spectrum in a thermal cell

Hong Cheng(成红)1,2, Shan-Shan Zhang(张珊珊)1,2, Pei-Pei Xin(辛培培)1,2, Yuan Cheng(程元)1,2, Hong-Ping Liu(刘红平)1,2   

  1. 1 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2016-06-08 Revised:2016-07-07 Online:2016-11-05 Published:2016-11-05
  • Contact: Hong-Ping Liu E-mail:liuhongping@wipm.ac.cn
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant No. 2013CB922003) and the National Natural Science Foundation of China (Grant Nos. 91421305, 91121005, and 11174329).

摘要: In this paper, we present a theoretical simulation of 87Rb absorption spectrum in a thermal cm-cell which is adaptive to the experimental observation. In experiment, the coupling and probe beams are configured to copropagate but perpendicular polarized, making up to five velocity selective optical pumping (VSOP) absorption dips able to be identified. A Λ-type electromagnetically induced transparency (EIT) is also observed for each group of velocity-selected atoms. The spectrum by only sweeping the probe beam can be decomposed into a combination of Doppler-broadened background and three VSOP dips for each group of velocity-selected atoms, accompanied by an EIT peak. This proposed theoretical model can be used to simulate the spectrum adaptive to the experimental observation by the non-linear least-square fit method. The fit for the high quality of experimental observation can determine valuable transition parameters such as decaying rates and coupling beam power accurately.

关键词: electromagnetically induced transparency, velocity selective resonance, optical pumping, multilevel system

Abstract: In this paper, we present a theoretical simulation of 87Rb absorption spectrum in a thermal cm-cell which is adaptive to the experimental observation. In experiment, the coupling and probe beams are configured to copropagate but perpendicular polarized, making up to five velocity selective optical pumping (VSOP) absorption dips able to be identified. A Λ-type electromagnetically induced transparency (EIT) is also observed for each group of velocity-selected atoms. The spectrum by only sweeping the probe beam can be decomposed into a combination of Doppler-broadened background and three VSOP dips for each group of velocity-selected atoms, accompanied by an EIT peak. This proposed theoretical model can be used to simulate the spectrum adaptive to the experimental observation by the non-linear least-square fit method. The fit for the high quality of experimental observation can determine valuable transition parameters such as decaying rates and coupling beam power accurately.

Key words: electromagnetically induced transparency, velocity selective resonance, optical pumping, multilevel system

中图分类号:  (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)

  • 42.50.Gy
32.70.Jz (Line shapes, widths, and shifts) 32.10.Fn (Fine and hyperfine structure)