›› 2015, Vol. 24 ›› Issue (1): 14205-014205.doi: 10.1088/1674-1056/24/1/014205

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

Macroscopic effects in electromagnetically-induced transparency in a Doppler-broadened system

裴丽娅a, 牛金艳b, 王如泉c, 屈一至a, 吴令安c, 傅盘铭c, 左战春c   

  1. a College of Material Sciences and Optoelectronic Technology, University of the Chinese Academy of Sciences, Beijing 100049, China;
    b School of Mathematics, Physics and Biological Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China;
    c Laboratory of Optical Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2014-05-30 修回日期:2014-08-13 出版日期:2015-01-05 发布日期:2015-01-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 10974252, 11274376, 60978002, and 11179041), the National Basic Research Program of China (Grant No. 2010CB922904), the National High Technology Research and Development Program of China (Grant No. 2011AA120102), the Natural Science Foundation of Inner Mongolia, China (Grants No. 2012MS0101), and the Innovation Fund of Inner Mongolia University of Science and Technology, China (Grants No. 2010NC064).

Macroscopic effects in electromagnetically-induced transparency in a Doppler-broadened system

Pei Li-Ya (裴丽娅)a, Niu Jin-Yan (牛金艳)b, Wang Ru-Quan (王如泉)c, Qu Yi-Zhi (屈一至)a, Wu Ling-An (吴令安)c, Fu Pan-Ming (傅盘铭)c, Zuo Zhan-Chun (左战春)c   

  1. a College of Material Sciences and Optoelectronic Technology, University of the Chinese Academy of Sciences, Beijing 100049, China;
    b School of Mathematics, Physics and Biological Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China;
    c Laboratory of Optical Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2014-05-30 Revised:2014-08-13 Online:2015-01-05 Published:2015-01-05
  • Contact: Fu Pan-Ming, Zuo Zhan-Chun E-mail:pmfu@aphy.iphy.ac.cn;zczuo@aphy.iphy.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 10974252, 11274376, 60978002, and 11179041), the National Basic Research Program of China (Grant No. 2010CB922904), the National High Technology Research and Development Program of China (Grant No. 2011AA120102), the Natural Science Foundation of Inner Mongolia, China (Grants No. 2012MS0101), and the Innovation Fund of Inner Mongolia University of Science and Technology, China (Grants No. 2010NC064).

摘要: We study the electromagnetically-induced transparency (EIT) in a Doppler-broadened cascaded three-level system. We decompose the susceptibility responsible for the EIT resonance into a linear and a nonlinear part, and the EIT resonance reflects mainly the characteristics of the nonlinear susceptibility. It is found that the macroscopic polarization interference effect plays a crucial role in determining the EIT resonance spectrum. To obtain a Doppler-free spectrum there must be polarization interference between atoms of different velocities. A dressed-state model, which analyzes the velocities at which the atoms are in resonance with the dressed states through Doppler frequency shifting, is employed to explain the results.

关键词: electromagnetically-induced transparency, polarisation interference, Doppler-broadened system

Abstract: We study the electromagnetically-induced transparency (EIT) in a Doppler-broadened cascaded three-level system. We decompose the susceptibility responsible for the EIT resonance into a linear and a nonlinear part, and the EIT resonance reflects mainly the characteristics of the nonlinear susceptibility. It is found that the macroscopic polarization interference effect plays a crucial role in determining the EIT resonance spectrum. To obtain a Doppler-free spectrum there must be polarization interference between atoms of different velocities. A dressed-state model, which analyzes the velocities at which the atoms are in resonance with the dressed states through Doppler frequency shifting, is employed to explain the results.

Key words: electromagnetically-induced transparency, polarisation interference, Doppler-broadened 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
42.50.Hz (Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)