Pancharatnam-Berry metasurface for terahertz wave radar cross section reduction

被引：21

作者：

Li, Shao-He ^{[1
]}

Li, Jiu-Sheng ^{[1
]}

机构：

[1] China Jiliang Univ, Ctr THz Res, Hangzhou 310018, Zhejiang, Peoples R China

来源：

CHINESE PHYSICS B | 2019年 / 28卷 / 09期

基金：

中国国家自然科学基金;

关键词：

terahertz metasurface; terahertz optics; terahertz polarization; BROAD-BAND; REFLECTION; METAMATERIALS; CLOAK;

D O I：

10.1088/1674-1056/ab33f5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The digital coding metasurfaces need several kinds of meta-particle structures to obtain corresponding electromagnetic wave responses and require time-consuming optimization. In this paper, we present train-symbol-shaped meta-particles with various orientations utilizing Pancharatnam-Berry (PB) phase to achieve 1-, 2-, and 3-bit digital coding metasurfaces. Terahertz wave scattering patterns of the coding metasurfaces with regular and random sequences are given and discussed. They have strongly suppressed backward scattering with approximately -13.5 dB radar cross section (RCS) reduction in a wide band range from 0.85 THz to 1.6 THz. The proposed digital coding metasurfaces provide a simple way and new opportunities for manipulating terahertz wave scattering with polarization independence.

引用

页数：7

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