Transmission‐Reflection‐Integrated Multifunctional Coding Metasurface for Full‐Space Controls of Electromagnetic Waves

Digital coding metasurfaces are aimed at simplifying the design and optimization procedures, and manipulating electromagnetic waves in digital manner. In this paper, a multilayered anisotropic coding metasurface is designed to realize multiple independent functionalities by changing the polarization...

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Bibliographic Details
Published in:Advanced functional materials 2018-08, Vol.28 (33), p.n/a
Main Authors: Zhang, Lei, Wu, Rui Yuan, Bai, Guo Dong, Wu, Hao Tian, Ma, Qian, Chen, Xiao Qing, Cui, Tie Jun
Format: Article
Language:English
Subjects:
beam deflection
Coding
coding metasurfaces
Design optimization
diffuse scattering
Electromagnetic radiation
Electron beams
Incident waves
Materials science
Metasurfaces
multifunctional integration
orbital angular momentum
Reflection
Wave fronts
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Summary:Digital coding metasurfaces are aimed at simplifying the design and optimization procedures, and manipulating electromagnetic waves in digital manner. In this paper, a multilayered anisotropic coding metasurface is designed to realize multiple independent functionalities by changing the polarization and direction of incident waves. As a proof of concept, the beam deflection, diffuse scattering, and vortex beam generation are realized by using only a single transmission‐reflection‐integrated (TRI) coding metasurface. This design can achieve three different functionalities and simultaneous controls of transmitted and reflected wavefronts on a shared aperture with the TRI coding scheme. Both numerical and measured results verify the excellent performance of the multifunctional digital coding metasurface, which provides a simple way to extend the functionality of high‐efficiency metadevices. A transmission‐reflection‐integrated multifunctional coding metasurface is proposed, which can work in both transmitted mode and reflected mode, by changing both the incident polarizations and directions. It is the first time to realize three different functionalities by using a single passive coding metasurface and simultaneously control not only the transmitted wavefronts but also reflected wavefronts on both sides of the interface.
ISSN:1616-301X
1616-3028
DOI:10.1002/adfm.201802205