Generation of orbital angular momentum and focused beams with tri-layer medium metamaterial*

被引：11
|
作者：
Sun, Zhi-Chao [1 ]
Yan, Meng-Yao [1 ]
Xu, Bi-Jun [1 ]
机构：
[1] Zhejiang Univ Sci & Technol, Sch Sci, Hangzhou 310023, Peoples R China
来源：
CHINESE PHYSICS B | 2020年 / 29卷 / 10期
关键词：
metamaterial; phase shift; wave-front shaping; orbital angular momentum; METASURFACE; WAVE;
D O I：
10.1088/1674-1056/abab79
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We propose a metal/dielectric tri-layer metamaterial for wavefront shaping. By arranging the element in an array with a constant phase gradient and irradiated it with a plane wave, focused and focused vortex beams can be obtained. The designed metamaterial features the excellent capability of focused/focused vortex beams generation within the operating frequency range of 30 GHz-34 GHz. The simulation results are consistent with the theoretical analyses.
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页数：5
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