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Proceedings Paper

Controlling the electromagnetically induced transparency frequency tuning range by radio-frequency field
Author(s): Lianshui Zhang; Zhonghong Zhuang; Jian Wang; Xiaomin Feng; Lijun Yang
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Paper Abstract

The Electromagnetically Induced Transparency (EIT) is associated with a Λ three-level system and the spectral position of EIT window can be changed by varying the frequency of the coupling field, however, at large detuning the EIT will evolve into a dispersion-like feature and transparency property of EIT become less obvious. In this paper, it is shown that we can perform EIT frequency tuning by a radio-frequency (rf) field. In the cascade quasic-Λ four-level system, the absorption profile of probe field is calculated by solving the equations of motion of the density matrix. It is shown that the Autler-Townes doublet originates from the rf-field induced dynamic Stark effect and the spectral position of EIT window is determined by the frequency detuning of the coupling field. When the frequency detuning of the coupling field is half of the rf Rabi frequency, the EIT feature remain its absorptive profile. The frequency tuning rang of EIT is determined by the rf Rabi frequency, and can be explained using a dressed-state analysis. Therefore, frequency tuning range of EIT can be controlled by the rf Rabi frequency.

Paper Details

Date Published: 11 February 2008
PDF: 9 pages
Proc. SPIE 6839, Nonlinear Optics: Technologies and Applications, 68391L (11 February 2008); doi: 10.1117/12.756393
Show Author Affiliations
Lianshui Zhang, Hebei Univ. (China)
Zhonghong Zhuang, Hebei Univ. (China)
Jian Wang, Hebei Univ. (China)
Xiaomin Feng, Hebei Univ. (China)
Lijun Yang, Hebei Univ. (China)

Published in SPIE Proceedings Vol. 6839:
Nonlinear Optics: Technologies and Applications
Yiping Cui; Qihuang Gong; Yuen-Ron Shen, Editor(s)

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