中国物理B ›› 2018, Vol. 27 ›› Issue (2): 24202-024202.doi: 10.1088/1674-1056/27/2/024202

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

Double-rod metasurface for mid-infrared polarization conversion

Yang Pu(蒲洋), Yi Luo(罗意), Lu Liu(刘路), De He(何德), Hongyan Xu(徐洪艳), Hongwei Jing(景洪伟), Yadong Jiang(蒋亚东), Zhijun Liu(刘志军)   

  1. 1. School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, China;
    2. Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China
  • 收稿日期:2017-07-26 修回日期:2017-10-16 出版日期:2018-02-05 发布日期:2018-02-05
  • 通讯作者: Zhijun Liu E-mail:liuzhijun@uestc.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grants Nos. 61421002 and 61575036), the Chinese National 1000 Plan for Young Talents, and the Startup Funding from University of Electronic Science and Technology of China.

Double-rod metasurface for mid-infrared polarization conversion

Yang Pu(蒲洋)1, Yi Luo(罗意)1, Lu Liu(刘路)1, De He(何德)1, Hongyan Xu(徐洪艳)2, Hongwei Jing(景洪伟)2, Yadong Jiang(蒋亚东)1, Zhijun Liu(刘志军)1   

  1. 1. School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, China;
    2. Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China
  • Received:2017-07-26 Revised:2017-10-16 Online:2018-02-05 Published:2018-02-05
  • Contact: Zhijun Liu E-mail:liuzhijun@uestc.edu.cn
  • About author:42.25.Ja; 78.67.Pt; 95.85.Hp
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grants Nos. 61421002 and 61575036), the Chinese National 1000 Plan for Young Talents, and the Startup Funding from University of Electronic Science and Technology of China.

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摘要： Resonant responses of metasurface enable effective control over the polarization properties of lights. In this paper, we demonstrate a double-rod metasurface for broadband polarization conversion in the mid-infrared region. The metasurface consists of a metallic double-rod array separated from a reflecting ground plane by a film of zinc selenide. By superimposing three localized resonances, cross polarization conversion is achieved over a bandwidth of 16.9 THz around the central frequency at 34.6 THz with conversion efficiency exceeding 70%. The polarization conversion performance is in qualitative agreement with simulation. The surface current distributions and electric field profiles of the resonant modes are discussed to analyze the underlying physical mechanism. Our demonstrated broadband polarization conversion has potential applications in the area of mid-infrared spectroscopy, communication, and sensing.

关键词: metasurface, polarization conversion, mid-infrared, broadband

Abstract: Resonant responses of metasurface enable effective control over the polarization properties of lights. In this paper, we demonstrate a double-rod metasurface for broadband polarization conversion in the mid-infrared region. The metasurface consists of a metallic double-rod array separated from a reflecting ground plane by a film of zinc selenide. By superimposing three localized resonances, cross polarization conversion is achieved over a bandwidth of 16.9 THz around the central frequency at 34.6 THz with conversion efficiency exceeding 70%. The polarization conversion performance is in qualitative agreement with simulation. The surface current distributions and electric field profiles of the resonant modes are discussed to analyze the underlying physical mechanism. Our demonstrated broadband polarization conversion has potential applications in the area of mid-infrared spectroscopy, communication, and sensing.

Key words: metasurface, polarization conversion, mid-infrared, broadband

中图分类号:  (Polarization)

  • 42.25.Ja
78.67.Pt (Multilayers; superlattices; photonic structures; metamaterials) 95.85.Hp (Infrared (3-10 μm))