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

作　　者：Zhi-Chao Sun Meng-Yao Yan Bi-Jun Xu 孙志超;闫梦瑶;徐弼军(School of Sciences,Zhejiang University of Science and Technology,Hangzhou 310023,China)

机构地区：[1]School of Sciences,Zhejiang University of Science and Technology,Hangzhou 310023,China

出　　处：《Chinese Physics B》2020年第10期233-237,共5页中国物理B（英文版）

基　　金：Project supported by the Natural Science Foundation of Zhejiang Province, China (Grant No. LY20F050001)。

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.

关 键 词：METAMATERIAL phase shift wave-front shaping orbital angular momentum 

分 类 号：TB34[一般工业技术—材料科学与工程]