Author:
Shen Peng,Xiong Xicheng,Zhang Wei,Liu Yufang,Zhang Jun,Yu Kun
Abstract
Abstract
An active plasmonic device is designed to support multiple perfect absorption peaks using the highly confined graphene surface plasmons excited by silicon-based diffractive gratings. The physical origination corresponding to different absorption peaks is analyzed and the principle of impedance matching is used to explain perfect absorption. We show that the absorption spectrum is effectively controllable over a wide wavelength range by changing the Fermi levels, relaxation time of the graphene and geometric parameters of the device. This study could provide some possibilities facilitating the design of next-generation optical and photoelectronic structures by combining graphene and dielectric grating.
Funder
The Project of Science and Technology of the Henan Province in China
Doctoral Fund of Henan University of Engineering
the National Natural Science Foundation of China
Outstanding Youth Foundation of Henan Normal University
Natural Science Foundation of Henan Province
Subject
General Physics and Astronomy,General Engineering
Cited by
1 articles.
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