Tunable asymmetric transmission of THz wave through a graphene chiral metasurface

被引：14
|
作者：
Zhao, Junyang [1 ]
Zhang, Jianfa [1 ]
Zhu, Zhihong [1 ,2 ]
Yuan, Xiaodong [1 ]
Qin, Shiqiao [1 ,2 ]
机构：
[1] Natl Univ Def Technol, Coll Optoelect Sci & Engn, Changsha 410073, Hunan, Peoples R China
[2] Natl Univ Def Technol, State Key Lab High Performance Comp, Changsha 410073, Hunan, Peoples R China
来源：
JOURNAL OF OPTICS | 2016年 / 18卷 / 09期
基金：
中国国家自然科学基金;
关键词：
graphene; metasurface; plasmonic; chiral; asymmetric transmission; UNIDIRECTIONAL TRANSMISSION; NANOSTRUCTURED GRAPHENE; CIRCULAR-DICHROISM; FANO RESONANCES; METAMATERIALS; ABSORPTION; PLASMONICS; LIGHT; POLARIZER; GRATINGS;
D O I：
10.1088/2040-8978/18/9/095001
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this paper, we show numerically that the asymmetric transmission of circularly polarized waves through a graphene chiral metasurface can be observed in the THz range. The relative enantiomeric difference in the total transmission varies with the change of graphene's Fermi level. The plasmonic excitation in the graphene metasurface is enantiomerically sensitive, which is asymmetric for opposite propagating directions. This phenomenon will deepen our understanding of light-matter interactions in planar chiral structures and may find applications in polarization-sensitive devices, sensors, detectors and other areas.
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页数：5
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