中国物理B ›› 2020, Vol. 29 ›› Issue (10): 104101-.doi: 10.1088/1674-1056/abab79

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Zhi-Chao Sun(孙志超)1, Meng-Yao Yan(闫梦瑶)1, Bi-Jun Xu(徐弼军)1,†()   

  • 收稿日期:2020-05-10 修回日期:2020-06-08 接受日期:2020-08-01 出版日期:2020-10-05 发布日期:2020-10-05
  • 通讯作者: Bi-Jun Xu(徐弼军)

Generation of orbital angular momentum and focused beams with tri-layer medium metamaterial

Zhi-Chao Sun(孙志超), Meng-Yao Yan(闫梦瑶), and Bi-Jun Xu(徐弼军)†   

  1. 1 School of Sciences, Zhejiang University of Science and Technology, Hangzhou 310023, China
  • Received:2020-05-10 Revised:2020-06-08 Accepted:2020-08-01 Online:2020-10-05 Published:2020-10-05
  • Contact: Corresponding author. E-mail: xubijun@zust.edu.cn
  • About author:
    †Corresponding author. E-mail: xubijun@zust.edu.cn
    * Project supported by the Natural Science Foundation of Zhejiang Province, China (Grant No. LY20F050001).

Abstract:

We propose a metal/dielectric tri-layer metamaterial for wavefront shaping. By arranging the element in an array with a constant phase gradient and irradiated it with a plane wave, focused and focused vortex beams can be obtained. The designed metamaterial features the excellent capability of focused/focused vortex beams generation within the operating frequency range of 30 GHz–34 GHz. The simulation results are consistent with the theoretical analyses.

Key words: metamaterial, phase shift, wave-front shaping, orbital angular momentum

中图分类号:  (Electromagnetic wave propagation; radiowave propagation)

  • 41.20.Jb
42.25.Bs (Wave propagation, transmission and absorption) 92.60.Ta (Electromagnetic wave propagation)