中国物理B ›› 2013, Vol. 22 ›› Issue (11): 114204-114204.doi: 10.1088/1674-1056/22/11/114204

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Enhanced Kerr nonlinearity in a left-handed three-level atomic system driven by a bichromatic field

杨晓雨a, 姜永远a b   

  1. a Department of Physics, Harbin Institute of Technology, Harbin 150001, China;
    b Key Lab of Micro-Optics and Photonic Technology of Heilongjiang Province, Harbin 150001, China
  • 收稿日期:2013-04-13 修回日期:2013-05-20 出版日期:2013-09-28 发布日期:2013-09-28
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 50836002 and 51176041) and the National Basic Research Program of China (Grant No. 2013CB328702).

Enhanced Kerr nonlinearity in a left-handed three-level atomic system driven by a bichromatic field

Yang Xiao-Yu (杨晓雨)a, Jiang Yong-Yuan (姜永远)a b   

  1. a Department of Physics, Harbin Institute of Technology, Harbin 150001, China;
    b Key Lab of Micro-Optics and Photonic Technology of Heilongjiang Province, Harbin 150001, China
  • Received:2013-04-13 Revised:2013-05-20 Online:2013-09-28 Published:2013-09-28
  • Contact: Jiang Yong-Yuan E-mail:jiangyy@hit.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 50836002 and 51176041) and the National Basic Research Program of China (Grant No. 2013CB328702).

摘要: Enhanced Kerr nonlinearity in a left-handed atomic system consisting of three levels driven by a bichromatic field is presented in this paper. Based on bichromatic field coherence, the real parts of the permittivity and permeability can obtain negative values simultaneously in the same detuning frequency region. By adjusting the frequency difference and the Rabi frequencies of the bichromatic field, the multi-band left-handed behavior of the presented atomic metamaterial is exhibited. Meanwhile, the enhanced Kerr nonlinearity can be realized in this multi-band left-handed three-level atomic system. It is shown that the third-order susceptibility possesses focusing or defocusing properties in the same frequency band.

关键词: left-handed, Kerr nonlinearity, bichromatic field, multi-band

Abstract: Enhanced Kerr nonlinearity in a left-handed atomic system consisting of three levels driven by a bichromatic field is presented in this paper. Based on bichromatic field coherence, the real parts of the permittivity and permeability can obtain negative values simultaneously in the same detuning frequency region. By adjusting the frequency difference and the Rabi frequencies of the bichromatic field, the multi-band left-handed behavior of the presented atomic metamaterial is exhibited. Meanwhile, the enhanced Kerr nonlinearity can be realized in this multi-band left-handed three-level atomic system. It is shown that the third-order susceptibility possesses focusing or defocusing properties in the same frequency band.

Key words: left-handed, Kerr nonlinearity, bichromatic field, multi-band

中图分类号:  (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)

  • 42.50.Gy
42.25.Bs (Wave propagation, transmission and absorption) 42.65.An (Optical susceptibility, hyperpolarizability) 78.20.Ci (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))