Actively tunable Fano resonances based on colossal magneto-resistant metamaterials

被引：6

作者：

Tian, Jie-Bing ^{[1
]}

Yan, Chang-Chun ^{[1
]}

Wang, Cheng ^{[1
]}

Han, Ying ^{[1
]}

Zou, Rong-Yuan ^{[1
]}

Li, Dong-Dong ^{[1
]}

Xu, Zheng-Ji ^{[2
]}

Zhang, Dao-Hua ^{[2
]}

机构：

[1] Jiangsu Normal Univ, Sch Phys & Elect Engn, Jiangsu Key Lab Adv Laser Mat & Devices, Xuzhou 221116, Peoples R China

[2] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

来源：

OPTICS LETTERS | 2015年 / 40卷 / 07期

基金：

中国国家自然科学基金;

关键词：

PLASMONIC NANOSTRUCTURES; INDUCED TRANSPARENCY; GRAPHENE; FIELD;

D O I：

10.1364/OL.40.001286

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this Letter, a periodic structure in which each unit cell consists of one manganese oxide (La0.7Ca0.3MnO3) strip and two gold strips is designed. By simulating the electromagnetic responses of the structure, we confirm that Fano resonances can be actively controlled in the infrared region by modulating the intensity of the external magnetic field applied to the structure. This is due to the colossal magneto-resistance of the La0.7Ca0.3MnO3 material. Furthermore, a transmission phase can also be effectively tuned. The phase has a shift of Delta Phi = 1.05 rad at a frequency of 130 THz when the intensity of the external magnetic field varies from 5083 to 5193 kA/m. Such a tunable method has potential applications in controllable photoelectric elements. (C) 2015 Optical Society of America

引用

页码：1286 / 1289

页数：4

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