中国物理B ›› 2023, Vol. 32 ›› Issue (4): 44202-044202.doi: 10.1088/1674-1056/acae7a

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Nonreciprocal negative refraction in a dense hot atomic medium

Hai Yi(易海)1,2, Hongjun Zhang(张红军)1,2,†, and Hui Sun(孙辉)1,2   

  1. 1 School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, China;
    2 Xi'an Key Laboratory of Optical Information Manipulation and Augmentation, Xi'an 710119, China
  • 收稿日期:2022-11-01 修回日期:2022-12-18 接受日期:2022-12-27 出版日期:2023-03-10 发布日期:2023-03-23
  • 通讯作者: Hongjun Zhang E-mail:zhhjun@snnu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 61671279). The authors also thank the financial support from Xi'an Key Laboratory of Optical Information Manipulation and Augmentation (OMA).

Nonreciprocal negative refraction in a dense hot atomic medium

Hai Yi(易海)1,2, Hongjun Zhang(张红军)1,2,†, and Hui Sun(孙辉)1,2   

  1. 1 School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, China;
    2 Xi'an Key Laboratory of Optical Information Manipulation and Augmentation, Xi'an 710119, China
  • Received:2022-11-01 Revised:2022-12-18 Accepted:2022-12-27 Online:2023-03-10 Published:2023-03-23
  • Contact: Hongjun Zhang E-mail:zhhjun@snnu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61671279). The authors also thank the financial support from Xi'an Key Laboratory of Optical Information Manipulation and Augmentation (OMA).

摘要: We investigate the electromagnetic properties of a four-level dense atomic gas medium with Doppler effect. It is shown that the relative permittivity and relative permeability of the medium can be negative simultaneously with low absorption in the same detuning interval on account of electromagnetically induced transparency. Furthermore, with the suitable parameters, the nonreciprocal negative refraction can be obtained due to the Doppler effect, and the nonreciprocity frequency band can be regulated by adjusting the temperature, the intensity of the control field and the atomic density in this hot atomic medium.

关键词: negative refraction, nonreciprocity, Doppler effect, atomic system

Abstract: We investigate the electromagnetic properties of a four-level dense atomic gas medium with Doppler effect. It is shown that the relative permittivity and relative permeability of the medium can be negative simultaneously with low absorption in the same detuning interval on account of electromagnetically induced transparency. Furthermore, with the suitable parameters, the nonreciprocal negative refraction can be obtained due to the Doppler effect, and the nonreciprocity frequency band can be regulated by adjusting the temperature, the intensity of the control field and the atomic density in this hot atomic medium.

Key words: negative refraction, nonreciprocity, Doppler effect, atomic system

中图分类号:  (Wave propagation, transmission and absorption)

  • 42.25.Bs
43.28.Py (Interaction of fluid motion and sound, Doppler effect, and sound in flow ducts) 51.70.+f (Optical and dielectric properties) 78.20.Ci (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))