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Electromagnetically induced negative refraction induced by microwave field driving hyperfine levels transition

Li Xiao-Li Zhang Lian-Shui Sun Jiang Feng Xiao-Min

Electromagnetically induced negative refraction induced by microwave field driving hyperfine levels transition

Li Xiao-Li, Zhang Lian-Shui, Sun Jiang, Feng Xiao-Min
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  • Abstract views:  1448
  • PDF Downloads:  314
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  • Received Date:  10 November 2010
  • Accepted Date:  09 May 2011
  • Published Online:  15 April 2012

Electromagnetically induced negative refraction induced by microwave field driving hyperfine levels transition

  • 1. College of Physical Science and Technology, Hebei University, Baoding 071002, China
Fund Project:  Project supported by the National Natural Science Foundation of China (Grant No. 10804025), the Natural Science Foundation of Hebei Province, China(Grant No. A2009000140), and the Scientific Project of Higher Education Institutions (Grant No. 2011114).

Abstract: Electromagnetically induced negative refraction induced by microwave field driving hyperfine level transition is studied by proposing a quasi-lambda type four-level system. Negative refraction characteristics are observed when hyperfine levels within ground state are driven by a microwave field which interacts with electric dipole moment or magnetic dipole moment at different hyperfine levels. In addition, two optical transitions between ground state and excited state are driven by two coupling fields respectively, and the frequency bandwidth of negative refraction is controlled by the detuning of two coupling fields. It is shown that frequency bandwidth of negative refraction is much narrower under off-resonant coupling field than under the resonant coupling field and there is a significant difference in behavior between positively detuned coupling field and negatively detuned coupling field.

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