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Splitting of electromagnetically induced transparency window and appearing of gain due to radio frequency field

Li Xiao-Li Shang Ya-Xuan Sun Jiang

Splitting of electromagnetically induced transparency window and appearing of gain due to radio frequency field

Li Xiao-Li, Shang Ya-Xuan, Sun Jiang
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  • Received Date:  21 August 2012
  • Accepted Date:  17 September 2012
  • Published Online:  20 March 2013

Splitting of electromagnetically induced transparency window and appearing of gain due to radio frequency field

  • 1. College of Physical Science and Technology, Hebei University, Baoding 071002, China;
  • 2. State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
Fund Project:  Project supported by the Young Scientists Fund of National Natural Science Foundation of China (Grant No. 10804025), the Natural Science Foundation of Hebei Province, China (Grant No. F2010000306), and the Scientific Project of Higher Education Institutions of Hebei Province, China (Grant No. 2011114).

Abstract: Two resonant radio frequency fields are added to lambda three-level system in this paper. By discussing the behaviors of probing field absorption profiles under the effect of different Rabi frequencies of two radio frequency fields, the splitting of electromagnetically induced transparency (EIT) can be seen and the overlapping between EIT and gain can be obtained. The results show that the two radio frequency fields have different control functions on the system. The radio frequency field which interacts with hyperfine levels of ground state plays a role in the splitting of EIT, but the radio frequency field which interacts with hyperfine levels of excited state does not work on it. In addition only when the Rabi frequency of radio frequency field interacting with hyperfine levels of ground state is greater than with hyperfine levels of excited state, can the new features about the overlapping between EIT and gain be obtained.

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