Anisotropic metasurface with near-unity circular polarization conversion

We demonstrate a bi-layer ultrathin anisotropic metasurface which could near-completely convert the circular-polarized electromagnetic wave to its cross polarization. The bi-layer metasurface is composed of periodic 180°-twisted double-cut split ring resonators on both sides of an F4B substrate. At...

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Bibliographic Details
Published in:Applied physics letters 2016-05, Vol.108 (18)
Main Authors: Wu, Xiaoxiao, Meng, Yan, Wang, Li, Tian, Jingxuan, Dai, Shiwei, Wen, Weijia
Format: Article
Language:English
Subjects:
Anisotropy
Applied physics
Circular polarization
Conversion
Cross polarization
Electromagnetic radiation
Metasurfaces
Resonant frequencies
Substrates
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Summary:We demonstrate a bi-layer ultrathin anisotropic metasurface which could near-completely convert the circular-polarized electromagnetic wave to its cross polarization. The bi-layer metasurface is composed of periodic 180°-twisted double-cut split ring resonators on both sides of an F4B substrate. At resonance, cross-polarized transmission larger than 94% is observed both in simulations and experiments. The resonant frequency of the metasurface could be effectively tuned by adjusting the geometric parameters of the metasurface, while relatively high conversion efficiency is preserved. The high efficiency and ease of fabrication suggest that the ultrathin metasurface could have potential applications in telecommunications.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4948594