Photonic spin Hall effect of graphene hyperbolic metasurfaces in the terahertz region

We theoretically investigate the photonic spin Hall effect (PSHE) of graphene hyperbolic metasurfaces in the terahertz region. We demonstrate that the PSHE shifts can reflect the topological transition of metasurfaces through tuning the frequency of the incident light or the Fermi energy of graphene...

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Bibliographic Details
Published inJournal of physics. D, Applied physics Vol. 52; no. 43; pp. 435104 - 435109
Main Authors Cao, Zhenzhou, Liang, Xiao, Qiu, Xuejun, Hou, Jin, Yang, Chunyong
Format Journal Article
LanguageEnglish
Published IOP Publishing 23.10.2019
Subjects
graphene
hyperbolic metasurfaces
photonic spin Hall effect
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Summary:We theoretically investigate the photonic spin Hall effect (PSHE) of graphene hyperbolic metasurfaces in the terahertz region. We demonstrate that the PSHE shifts can reflect the topological transition of metasurfaces through tuning the frequency of the incident light or the Fermi energy of graphene. The PSHE shifts vary with rotating hyperbolic metasurfaces and arrive at the maximum when the electric field direction of the incident polarized light is along graphene strips. The PSHE shift component, the Goos-Hänchen shift, is enhanced by the orbital angular momentum, which can be used to identify the topologic charge of the Laguerre-Gaussian beam. Barcode encryption utilizing the PSHE shifts is illustrated, which has potential application in information processing.
Bibliography:JPhysD-120796.R2
ISSN:0022-3727
1361-6463
DOI:10.1088/1361-6463/ab36e9