Controlling the electromagnetically induced transparency frequency tuning range by radio-frequency field

Lianshui Zhang; Zhonghong Zhuang; Jian Wang; Xiaomin Feng; Lijun Yang

doi:10.1117/12.756393

11 February 2008 Controlling the electromagnetically induced transparency frequency tuning range by radio-frequency field

Lianshui Zhang, Zhonghong Zhuang, Jian Wang, Xiaomin Feng, Lijun Yang

Author Affiliations +

Proceedings Volume 6839, Nonlinear Optics: Technologies and Applications; 68391L (2008) https://doi.org/10.1117/12.756393
Event: Photonics Asia 2007, 2007, Beijing, China

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.

Citation Download Citation

Lianshui Zhang, Zhonghong Zhuang, Jian Wang, Xiaomin Feng, and Lijun Yang "Controlling the electromagnetically induced transparency frequency tuning range by radio-frequency field", Proc. SPIE 6839, Nonlinear Optics: Technologies and Applications, 68391L (11 February 2008); https://doi.org/10.1117/12.756393

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