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Proceedings Paper

The switch between electromagnetically induced transparency and absorption due to the power broadening of probing field
Author(s): Xiaoli Li; Chao He; Jianfei Zhang
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Paper Abstract

In this paper we present a theoretical study of the nonlinear effect in the quasi-lambda type four-level system. The system consists of an excited state level and three ground state hyperfine levels. Probing and coupling field are coupled to between the excited state and two higher ground states, and the microwave field drives the two lower ground states which are associated with probing field. By solving the precision solutions of the equations of motion of density matrix, the absorption properties as a function of Rabi frequencies of the probing field and microwave field are given. As a result, the switch from double EIT to single EIA is found due to the power broadening of probing field. However, the splitting frequency of double EIT has some connection with the Rabi frequency of microwave field.

Paper Details

Date Published: 4 November 2010
PDF: 9 pages
Proc. SPIE 7846, Quantum and Nonlinear Optics, 784617 (4 November 2010); doi: 10.1117/12.871626
Show Author Affiliations
Xiaoli Li, Hebei Univ. (China)
Chao He, Graduate Univ. of the Chinese Academy of Sciences (China)
Jianfei Zhang, Hebei Univ. (China)

Published in SPIE Proceedings Vol. 7846:
Quantum and Nonlinear Optics
Qihuang Gong; Guang-Can Guo; Yuen-Ron Shen, Editor(s)

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