期刊
OPTICS COMMUNICATIONS
卷 511, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.optcom.2022.127997
关键词
Terahertz wave; Multifunctional vortex beam; Orbital angular momentum; Flexible manipulation
类别
资金
- National Natural Science Foundation of China [61871355, 61831012]
- Talent project of Zhejiang Provincial Department of science and technology, China [2018R52043]
- Zhejiang Key R&D Project of China [2021C03153, 2022C03166]
- Fundamental Research Funds for the Provincial Universities of Zhejiang, China [2020YW20, 2021YW86]
- Zhejiang Lab, China [2019LC0AB03]
This study proposes a notched concave metasurface that can generate multifunctional vortex beams and adapt to different polarizations. The designed metasurface has potential applications in flexible manipulation of orbital angular momentum and polarization detection of terahertz waves in future terahertz wireless communications.
In order to effectively improve the information carrying capacity of modern wireless communication systems, vortex beams with orbital angular momentum (OAM) have attracted extensive attention due to extending communication capacity through orthogonal channels with different OAM modes carrying different information. However, the reported studies are only concentrated on single-function vortex beam. Here, we propose a notched concave metasurface to generate for multifunctional vortex beams such as four vortex beams, focusing vortex beams, deviation focusing vortex beams, and multi-beam vortex beam under different polarization. The theoretical results show good agreements with the full-wave simulations. The designed metasurface enables diversified promising applications for flexible manipulation OAM and terahertz wave polarization detection in future terahertz wireless communication.
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