Ultra-long-wave infrared broadband absorber based on a nano-resonant ring structure

被引:3
|
作者
Chen, Shilin [1 ]
LI, Zhiwei [1 ]
Wu, Lejia [1 ]
Wang, Wenjie [2 ]
Teng, Xudong [1 ]
机构
[1] Shanghai Univ Engn Sci, Sch Elect & Elect Engn, Shanghai 201620, Peoples R China
[2] China Acad Engn Phys, Microsyst & Terahertz Res Ctr, Chengdu 610200, Peoples R China
基金
中国国家自然科学基金;
关键词
METAMATERIAL ABSORBER; ABSORPTION;
D O I
10.1364/OME.489439
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We designed a four-layer structured absorber (Ti-Si-SiO2-Ti) in the ultra-long-wave infrared band. The paper applies the bare Ti-SiO2-Si film to determine the approximate target band of the absorber, and combined with the coupling effect of the top double-ring structure, it greatly enhances the absorber's property, which can make the absorber absorb more than 90% in the range of 14.0-26.3 & mu;m in the ultra-long-wave infrared band. For the complex natural environment in practical applications, the absorber has excellent polarization independence and maintains excellent absorption in the incident environment from 0-60 & DEG;. & COPY; 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
引用
收藏
页码:1579 / 1588
页数:10
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