Ultrathin Terahertz Dual-Band Perfect Metamaterial Absorber Using Asymmetric Double-Split Rings Resonator

被引：25

作者：

Lu, Taiguo ^{[1
,2
,3
]}

Zhang, Dawei ^{[1
,2
]}

Qiu, Peizhen ^{[1
,2
]}

Lian, Jiqing ^{[1
,2
]}

Jing, Ming ^{[1
,2
]}

Yu, Binbin ^{[1
,2
]}

Wen, Jing ^{[1
,2
]}

机构：

[1] Univ Shanghai Sci & Technol, Engn Res Ctr Opt Instrument & Syst, Minist Educ, Shanghai 200093, Peoples R China

[2] Univ Shanghai Sci & Technol, Shanghai Key Lab Modern Opt Syst, Shanghai 200093, Peoples R China

[3] Liaocheng Univ, Sch Phys Sci & Informat Engn, Liaocheng 252059, Shandong, Peoples R China

来源：

SYMMETRY-BASEL | 2018年 / 10卷 / 07期

基金：

中国国家自然科学基金;

关键词：

asymmetrical double-split rings; metamaterial; tunable dual-band perfect absorber;

D O I：

10.3390/sym10070293

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In this article, an ultrathin terahertz dual band metamaterial absorber made up of patterned asymmetrical double-split rings and a continuous metal layer separated by a thin FR-4 layer is designed. Simulation results show that two almost identical strong absorption peaks appear in the terahertz band. When the incident electric field is perpendicular to the ring gaps located at 11 mu m asymmetrically, the absorptivity of 98.6% at 4.48 THz and 98.5% at 4.76 THz can be obtained. The absorption frequency and the absorptivity of the absorber can be modulated by the asymmetric distribution of the gaps. The perfect metamaterial absorber is expected to provide important reference for the design of terahertz modulator, filters, absorbers, and polarizers.

引用

页数：8

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