Broadband plasmon induced transparency in terahertz metamaterials

被引:121
作者
Zhu, Zhihua [1 ,2 ]
Yang, Xu [1 ,2 ]
Gu, Jianqiang [1 ,2 ]
Jiang, Jun [1 ,2 ]
Yue, Weisheng [3 ]
Tian, Zhen [1 ,2 ]
Tonouchi, Masayoshi [4 ]
Han, Jiaguang [1 ,2 ]
Zhang, Weili [1 ,2 ,5 ]
机构
[1] Tianjin Univ, Ctr Terahertz Waves, Tianjin 300072, Peoples R China
[2] Tianjin Univ, Coll Precis Instrument & Optoelect Engn, Tianjin 300072, Peoples R China
[3] King Abdullah Univ Sci & Technol KAUST, Adv Nanofabricat & Imaging Core Lab, Thuwal 239556900, Saudi Arabia
[4] Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan
[5] Oklahoma State Univ, Sch Elect & Comp Engn, Stillwater, OK 74078 USA
基金
中国国家自然科学基金; 美国国家科学基金会;
关键词
ELECTROMAGNETICALLY INDUCED TRANSPARENCY; CLASSICAL ANALOG; LIGHT; RESONANCE; MEDIA;
D O I
10.1088/0957-4484/24/21/214003
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Plasmon induced transparency (PIT) could be realized in metamaterials via interference between different resonance modes. Within the sharp transparency window, the high dispersion of the medium may lead to remarkable slow light phenomena and an enhanced nonlinear effect. However, the transparency mode is normally localized in a narrow frequency band, which thus restricts many of its applications. Here we present the simulation, implementation, and measurement of a broadband PIT metamaterial functioning in the terahertz regime. By integrating four U-shape resonators around a central bar resonator, a broad transparency window across a frequency range greater than 0.40 THz is obtained, with a central resonance frequency located at 1.01 THz. Such PIT metamaterials are promising candidates for designing slow light devices, highly sensitive sensors, and nonlinear elements operating over a broad frequency range.
引用
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页数:7
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