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Mode manipulation and near-THz absorptions in binary grating-graphene layer structures

Haiming Yuan12, Hanning Yang12, Pengzi Liu12, Xiangqian Jiang12 and Xiudong Sun12*

Author Affiliations

1 Department of Physics, Harbin Institute of Technology, Harbin 150001, China

2 Key Lab of Micro-Optics and Photonic Technology of Heilongjiang Province, Harbin 150001, China

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Nanoscale Research Letters 2014, 9:90  doi:10.1186/1556-276X-9-90

Published: 21 February 2014


The excitation and absorption properties of grating coupled graphene surface plasmons were studied. It was found that whether a mode can be excited is mainly determined by the frequency of incident light and the duty ratio of gratings. In the structure consisting graphene bilayer, a blueshift of the excitation frequency existed when the distance between neighbor graphene layer were decreased gradually. In graphene-grating multilayer structures, a strong absorption (approximately 90% at maximum) was found in near-THz range.

Graphene surface plasmons; Excitation condition; Multilayer structure absorption