Tunable quad-band absorber based on graphene metamaterials

被引：0
|
作者：
Luo, Qing Peng [1 ,2 ]
Kong, Wei Jin [1 ,2 ]
Xie, Wan Li [1 ,2 ]
Yun, Mao Jin [1 ,2 ]
机构：
[1] Qingdao Univ, Coll Phys Sci, Qingdao 266701, Peoples R China
[2] Qingdao Univ, Key Lab Photon Mat & Technol Univ Shandong, Qingdao 266701, Peoples R China
来源：
NANOPHOTONICS AND MICRO/NANO OPTICS VII | 2021年 / 11903卷
基金：
中国国家自然科学基金;
关键词：
optical device; perfect absorber; terahertz; infrared; graphene; INDUCED TRANSPARENCY; ABSORPTION;
D O I：
10.1117/12.2600551
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
High performance absorber is desirable for solar energy, photo detection and optical interconnects. Here an active tunable graphene metamaterials quad-band absorber is theoretically demonstrated. The designed absorber has four higher than 97% absorption peaks in terahertz and infrared range. This absorber consists of a graphene layer, a silica substrate and a metal reflective surface. Simulation demonstrates that absorbance peak can be adjusted by changing geometric parameters of the periodic array structure or the Fermi level of the graphene. Such devices may have potential application in active plasmonic sensor, Light detection, photo thermal conversion and optoelectronic devices.
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页数：6
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