中国物理B ›› 2024, Vol. 33 ›› Issue (1): 14207-14207.doi: 10.1088/1674-1056/acdac2

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Giant and controllable Goos—Hänchen shift of a reflective beam off a hyperbolic metasurface of polar crystals

Tian Xue(薛天)1, Yu-Bo Li(李宇博)1, Hao-Yuan Song(宋浩元)1, Xiang-Guang Wang(王相光)1, Qiang Zhang(张强)1, Shu-Fang Fu(付淑芳)1,†, Sheng Zhou(周胜)2,‡, and Xuan-Zhang Wang(王选章)1   

  1. 1 Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, and School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, China;
    2 Department of Basic Courses, Guangzhou Maritime University, Guangzhou 510725, China
  • 收稿日期:2023-04-04 修回日期:2023-05-30 接受日期:2023-06-02 出版日期:2023-12-13 发布日期:2023-12-13
  • 通讯作者: Shu-Fang Fu, Sheng Zhou E-mail:shufangfu1975@163.com;zhousheng_wl@126.com
  • 基金资助:
    Project supported by the Natural Science Foundation of Heilongjiang Province of China (Grant No. LH2020A014) and the Graduate Students’ Research Innovation Project of Harbin Normal University (Grant No. HSDSSCX2022-47).

Giant and controllable Goos—Hänchen shift of a reflective beam off a hyperbolic metasurface of polar crystals

Tian Xue(薛天)1, Yu-Bo Li(李宇博)1, Hao-Yuan Song(宋浩元)1, Xiang-Guang Wang(王相光)1, Qiang Zhang(张强)1, Shu-Fang Fu(付淑芳)1,†, Sheng Zhou(周胜)2,‡, and Xuan-Zhang Wang(王选章)1   

  1. 1 Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, and School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, China;
    2 Department of Basic Courses, Guangzhou Maritime University, Guangzhou 510725, China
  • Received:2023-04-04 Revised:2023-05-30 Accepted:2023-06-02 Online:2023-12-13 Published:2023-12-13
  • Contact: Shu-Fang Fu, Sheng Zhou E-mail:shufangfu1975@163.com;zhousheng_wl@126.com
  • Supported by:
    Project supported by the Natural Science Foundation of Heilongjiang Province of China (Grant No. LH2020A014) and the Graduate Students’ Research Innovation Project of Harbin Normal University (Grant No. HSDSSCX2022-47).

摘要: We conduct a theoretical analysis of the massive and tunable Goos—Hänchen (GH) shift on a polar crystal covered with periodical black phosphorus (BP)-patches in the THz range. The surface plasmon phonon polaritons (SPPPs), which are coupled by the surface phonon polaritons (SPhPs) and surface plasmon polaritons (SPPs), can greatly increase GH shifts. Based on the in-plane anisotropy of BP, two typical metasurface models are designed and investigated. An enormous GH shift of about -7565.58 λ0 is achieved by adjusting the physical parameters of the BP-patches. In the designed metasurface structure, the maximum sensitivity accompanying large GH shifts can reach about 6.43×108 λ0/RIU, which is extremely sensitive to the size, carrier density, and layer number of BP. Compared with a traditional surface plasmon resonance sensor, the sensitivity is increased by at least two orders of magnitude. We believe that investigating metasurface-based SPPPs sensors could lead to high-sensitivity biochemical detection applications.

关键词: Goos—Hänchen shift, black phosphorus, surface plasmon phonon polaritons, sensitivity, metasurfaces

Abstract: We conduct a theoretical analysis of the massive and tunable Goos—Hänchen (GH) shift on a polar crystal covered with periodical black phosphorus (BP)-patches in the THz range. The surface plasmon phonon polaritons (SPPPs), which are coupled by the surface phonon polaritons (SPhPs) and surface plasmon polaritons (SPPs), can greatly increase GH shifts. Based on the in-plane anisotropy of BP, two typical metasurface models are designed and investigated. An enormous GH shift of about -7565.58 λ0 is achieved by adjusting the physical parameters of the BP-patches. In the designed metasurface structure, the maximum sensitivity accompanying large GH shifts can reach about 6.43×108 λ0/RIU, which is extremely sensitive to the size, carrier density, and layer number of BP. Compared with a traditional surface plasmon resonance sensor, the sensitivity is increased by at least two orders of magnitude. We believe that investigating metasurface-based SPPPs sensors could lead to high-sensitivity biochemical detection applications.

Key words: Goos—Hänchen shift, black phosphorus, surface plasmon phonon polaritons, sensitivity, metasurfaces

中图分类号:  (Nonlinear optics)

  • 42.65.-k
81.05.Xj (Metamaterials for chiral, bianisotropic and other complex media) 77.22.Ch (Permittivity (dielectric function)) 07.07.Df (Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)