https://doi.org/10.1140/epjd/s10053-023-00699-1
Regular Article – Optical Phenomena and Photonics
Tunable transmission properties and lateral shifts in anisotropic chiral multilayer structure with a topological insulator defect layer
1
School of Communication Engineering, Hangzhou Dianzi University, 310018, Hangzhou, China
2
Key Laboratory of Advanced Micro-Structured Materials of Ministry of Education, School of Physics Science and Engineering, Tongji University, 200092, Shanghai, China
a
zengran@hdu.edu.cn
c
haozhenli@hdu.edu.cn
Received:
3
March
2023
Accepted:
8
June
2023
Published online:
21
June
2023
The transmission spectrum and optical properties of the anisotropic chiral multilayered structure containing a defect layer made of topological insulator (TI) are investigated. We present the transfer matrix formalism to describe the propagation of the electromagnetic wave through the structure and calculate the transmittance, polarization conversion rate and spatial lateral shifts. We find that there are double defect modes at the center of bandgap of the transmission spectrum for the TI defect with parallel magnetization. The axial electromagnetic response of the uniaxial chiral medium is proved to be dominantly involved in the influence of the chirality on the defect modes and polarization conversion. For the spatial lateral shift of the structure, there are double enhancement peaks that coincide with the double peaks of the topological defect modes, and the process of variation of the lateral shift enhancement peaks with the angle of incidence is shown. The special feature of transmission behavior and lateral shift in the proposed structure is a manifestation of topological magnetoelectric effect manipulated by the anisotropic chirality, and it offers possibilities for practical application in designing related devices.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
