Oblique incidence achromatic stealth metasurface based on all-dielectric

被引:3
|
作者
Sun, Shuo [1 ]
Chen, Liang [1 ]
Jing, Xufeng [1 ]
Shi, Siqi [1 ]
机构
[1] China Jiliang Univ, Coll Opt & Elect Technol, Hangzhou, Peoples R China
来源
EUROPEAN PHYSICAL JOURNAL D | 2023年 / 77卷 / 06期
基金
中国国家自然科学基金;
关键词
METAMATERIALS; PHASE;
D O I
10.1140/epjd/s10053-023-00689-3
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
With the development of information technology, metasurface has been widely used in social life. However, metasurface technology still has some shortcomings, such as limited function and low efficiency. Herein, based on the generalized Snell theorem, an oblique incidence achromatic stealth device based on all-dielectric is designed. In order to avoid the ohmic loss effect caused by metal structure, all-silicon dielectric materials are used to design metasurface unit structures. By adjusting the phase gradient and linear dispersion of the unit structure simultaneously, the incident beams of different frequencies are deflected at the same angle around invisible object without scattering. When the plane wave is obliquely incident on the metasurface at an angle of 30 degrees, achromatic stealth can be achieved at the frequency of 0.5, 1.0 and 1.5 THz, which reduces the influence of chromatic aberration on the metasurface stealth device. The research results have a good application prospect in radar, digital communication and other fields.
引用
收藏
页数:8
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