Broadband and wide angle perfect reflection by super periodic cubes metamaterials in terahertz region

被引：6

作者：

Jiang, Li ^{[1
]}

Fang, Bo ^{[2
]}

Yan, Zhigang ^{[3
]}

Li, Chenxia ^{[1
]}

Gan, Haiyong ^{[4
]}

He, Yingwei ^{[4
]}

Hong, Zhi ^{[5
]}

Jing, Xufeng ^{[1
,5
]}

机构：

[1] China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Peoples R China

[2] China Jiliang Univ, Coll Metrol & Measurement Engn, Hangzhou 310018, Peoples R China

[3] Hangzhou Dahua Apparat Manutacture Co Ltd, Hangzhou, Peoples R China

[4] Natl Inst Metrol, Beijing, Peoples R China

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

来源：

MICROELECTRONIC ENGINEERING | 2020年 / 223卷

基金：

中国国家自然科学基金;

关键词：

Reflector; Broadband; Metamaterial; Terahertz; Microstructure; REFRACTIVE-INDEX METAMATERIALS; ORBITAL ANGULAR-MOMENTUM; BEAMS; DESIGN; IMPROVEMENT; PARAMETERS; VALIDITY; LIGHT;

D O I：

10.1016/j.mee.2020.111216

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present three kinds of broadband terahertz perfect reflectors by using all-dielectric metamaterials. Based on the principle of Mie resonances of resonators with high refractive index, the perfect reflection with wide spectrum and wide angle can be achieved. For the first kind of metamaterial, the common type of reflector with one cube in unit cell is demonstrated. For the second kind of reflector, there are two resonators with different geometric parameters in super periodic unit cell. For the third kind of reflector, there are four resonators with different geometric parameters in super periodic unit cell. Importantly, in order to enhance the response of angle for the perfect reflection, we propose the pyramidal composite microstructure metamaterial to realize the broadband reflection at oblique incidence. For the pyramidal composite reflector with four resonators in one super unit cell, the perfect reflection can be obtained from 0.75THz to 1.15THz with the decreased Fano resonant effect at oblique incidence.

引用

页数：9