中国物理B ›› 2004, Vol. 13 ›› Issue (8): 1251-1258.doi: 10.1088/1009-1963/13/8/012

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Variation of the absorption and dispersion profiles in a ladder-four-level system

李永放, 孙建锋, 钮月萍   

  1. College of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China
  • 收稿日期:2002-08-07 修回日期:2003-11-30 出版日期:2005-06-23 发布日期:2005-06-23

Variation of the absorption and dispersion profiles in a ladder-four-level system

Li Yong-Fang (李永放), Sun Jian-Feng (孙建锋), Niu Yue-Ping (钮月萍)   

  1. College of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China
  • Received:2002-08-07 Revised:2003-11-30 Online:2005-06-23 Published:2005-06-23

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摘要： A theoretical research on the variation of the absorption and dispersion profiles and population distribution of each level in a ladder-four-level system driven by two coherent fields has been made. Whether the variation occurs or not depends on the effect of quantum interference, the detuning of the upper coherent field and the separation of the two intermediate levels. A dressed-state analysis is introduced to explain the numerical results.

Abstract: A theoretical research on the variation of the absorption and dispersion profiles and population distribution of each level in a ladder-four-level system driven by two coherent fields has been made. Whether the variation occurs or not depends on the effect of quantum interference, the detuning of the upper coherent field and the separation of the two intermediate levels. A dressed-state analysis is introduced to explain the numerical results.

Key words: quantum interference, dressed-state, absorption and dispersion profile, population distri-bution

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

  • 42.50.Gy
03.65.-w (Quantum mechanics)