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Nanomaterials 2016, 6(9), 155; doi:10.3390/nano6090155

Electrically Tunable Absorption Enhancement with Spectral and Polarization Selectivity through Graphene Plasmonic Light Trapping

1
College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
2
State Key Laboratory of High Performance Computing, National University of Defense Technology, Changsha 410073, China
*
Author to whom correspondence should be addressed.
Academic Editors: Ho Won Jang and Soo Young Kim
Received: 29 June 2016 / Revised: 30 July 2016 / Accepted: 12 August 2016 / Published: 23 August 2016
(This article belongs to the Special Issue 2D Nanomaterials: Graphene and Beyond Graphene)
View Full-Text   |   Download PDF [1728 KB, uploaded 23 August 2016]   |  

Abstract

In this paper, anisotropic graphene plasmonic structures are explored for light trapping and absorption enhancement in surrounding media. It is shown that electrically tunable and versatile spectral and polarization selectivity can be realized. Particularly, it is possible to control absorption of the incident light’s polarization component at a specific wavelength by varying the Fermi energy with suitable geometric designs. It may find applications for new types of infrared and THz photodetectors and will promote the research of other novel polarization devices. View Full-Text
Keywords: graphene; plasmonic; absorption enhancement; polarization selectivity; photodetectors graphene; plasmonic; absorption enhancement; polarization selectivity; photodetectors
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Liu, W.; Zhang, J.; Zhu, Z.; Yuan, X.; Qin, S. Electrically Tunable Absorption Enhancement with Spectral and Polarization Selectivity through Graphene Plasmonic Light Trapping. Nanomaterials 2016, 6, 155.

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