Magnetically Tunable Goos–Hänchen Shift of Reflected Beam in Multilayer Structures Containing Anisotropic Graphene
Source abstract
Abstract
In this paper, the magnetically tunable Goos–Hänchen (GH) shift of a reflected beam at terahertz frequencies is achieved by using a multilayer structure where three layers of anisotropic graphene are inserted. The enhanced GH shift phenomenon results from the local field enhancement owing to the excitation of graphene surface plasmon polaritons at the interface between two dielectric materials. By considering the quantum response of graphene, the GH shift can be switched from negative to positive by harnessing the anisotropic conductivity of graphene, and the GH shift can be actively tuned through the external magnetic field or by controlling the structural parameters. By setting appropriate magnetic field and structural parameters, we can obtain GH values of −140 microns to 220 microns in the terahertz band. This enhanced and tunable GH shift is promising for fabricating graphene-based terahertz shift devices and other applications in nanophotonics.
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Research context
OpenAlex topics: Quantum optics and atomic interactions · Metamaterials and Metasurfaces Applications · Plasmonic and Surface Plasmon Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Intelligent Manufacturing and Electronic Engineering, Wenzhou University of Technology, Wenzhou 325035, China
Jiangsu Key Laboratory of Spectral Imaging and Intelligence Sense, Nanjing University of Science and Technology, Nanjing 210094, China
School of Physics and Electronics, Hunan Normal University, Changsha 410081, China
Funding
National Natural Science Foundation of China · Scientific research project of Zhejiang Provincial Department of Education · Natural Science Foundation of Hunan Province · Scientific Research Fund of Hunan Provincial Education Department · Wenzhou University of Technology · Wenzhou major science and technology innovation project · Wenzhou scientific research project
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Show source-provided references
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