Giant and controllable Goos-H?nchen shift of a reflective beam off a hyperbolic metasurface of polar crystals

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外文摘要：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-7565.58λ0 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.

外文关键词：

Goos-Hänchen shiftblack phosphorussurface plasmon phonon polaritonssensitivitymetasur-faces

作者：

薛天、李宇博、宋浩元、王相光、张强、付淑芳、周胜、王选章

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作者单位：

Key Laboratory for Photonic and Electronic Bandgap Materials,Ministry of Education,and School of Physics and Electronic Engineering,Harbin Normal University,Harbin 150025,China

Department of Basic Courses,Guangzhou Maritime University,Guangzhou 510725,China

基金：

Natural Science Foundation of Heilongjiang Province of ChinaGraduate Students'Research Innovation Project of Harbin Normal University

项目编号：

LH2020A014HSDSSCX2022-47

出版年：

2024

DOI：

10.1088/1674-1056/acdac2

中国物理B(英文版)

中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI

影响因子：0.995

ISSN：1674-1056

年,卷(期)：2024.33(1)

参考文献量46