Terahertz Optoelectronic Property of Graphene: Substrate-Induced Effects on Plasmonic Characteristics

The terahertz plasmon dispersion of a multilayer system consisting of graphene on dielectric and/or plasma thin layers is systematically investigated. We show that graphene plasmons can couple with other quasiparticles such as phonons and plasmons of the substrate; the characteristics of the plasmon...

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Main Authors:	I-Tan Lin, Yi-Ping Lai, Kuang-Hsiung Wu, Jia-Ming Liu
Format:	Article
Language:	English
Published:	MDPI AG 2014-02-01
Series:	Applied Sciences
Subjects:	graphene plasmon coupling phonon scattering rate optical conductivity terahertz Drude model
Online Access:	http://www.mdpi.com/2076-3417/4/1/28

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spelling	doaj-7b36d4073cd649859820d783a6012ea42020-11-24T23:06:48ZengMDPI AGApplied Sciences2076-34172014-02-0141284110.3390/app4010028app4010028Terahertz Optoelectronic Property of Graphene: Substrate-Induced Effects on Plasmonic CharacteristicsI-Tan Lin0Yi-Ping Lai1Kuang-Hsiung Wu2Jia-Ming Liu3Electrical Engineering Department, University of California, Los Angeles, Los Angeles, CA 90095, USAElectrical Engineering Department, University of California, Los Angeles, Los Angeles, CA 90095, USADepartment of Electrophysics, National Chiao-Tung University, Hsinchu 300, TaiwanElectrical Engineering Department, University of California, Los Angeles, Los Angeles, CA 90095, USAThe terahertz plasmon dispersion of a multilayer system consisting of graphene on dielectric and/or plasma thin layers is systematically investigated. We show that graphene plasmons can couple with other quasiparticles such as phonons and plasmons of the substrate; the characteristics of the plasmon dispersion of graphene are dramatically modified by the presence of the coupling effect. The resultant plasmon dispersion of the multilayer system is a strong function of the physical parameters of the spacer and the substrate, signifying the importance of the substrate selection in constructing graphene-based plasmonic devices.http://www.mdpi.com/2076-3417/4/1/28grapheneplasmoncouplingphononscattering rateoptical conductivityterahertzDrude model
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	I-Tan Lin Yi-Ping Lai Kuang-Hsiung Wu Jia-Ming Liu
spellingShingle	I-Tan Lin Yi-Ping Lai Kuang-Hsiung Wu Jia-Ming Liu Terahertz Optoelectronic Property of Graphene: Substrate-Induced Effects on Plasmonic Characteristics Applied Sciences graphene plasmon coupling phonon scattering rate optical conductivity terahertz Drude model
author_facet	I-Tan Lin Yi-Ping Lai Kuang-Hsiung Wu Jia-Ming Liu
author_sort	I-Tan Lin
title	Terahertz Optoelectronic Property of Graphene: Substrate-Induced Effects on Plasmonic Characteristics
title_short	Terahertz Optoelectronic Property of Graphene: Substrate-Induced Effects on Plasmonic Characteristics
title_full	Terahertz Optoelectronic Property of Graphene: Substrate-Induced Effects on Plasmonic Characteristics
title_fullStr	Terahertz Optoelectronic Property of Graphene: Substrate-Induced Effects on Plasmonic Characteristics
title_full_unstemmed	Terahertz Optoelectronic Property of Graphene: Substrate-Induced Effects on Plasmonic Characteristics
title_sort	terahertz optoelectronic property of graphene: substrate-induced effects on plasmonic characteristics
publisher	MDPI AG
series	Applied Sciences
issn	2076-3417
publishDate	2014-02-01
description	The terahertz plasmon dispersion of a multilayer system consisting of graphene on dielectric and/or plasma thin layers is systematically investigated. We show that graphene plasmons can couple with other quasiparticles such as phonons and plasmons of the substrate; the characteristics of the plasmon dispersion of graphene are dramatically modified by the presence of the coupling effect. The resultant plasmon dispersion of the multilayer system is a strong function of the physical parameters of the spacer and the substrate, signifying the importance of the substrate selection in constructing graphene-based plasmonic devices.
topic	graphene plasmon coupling phonon scattering rate optical conductivity terahertz Drude model
url	http://www.mdpi.com/2076-3417/4/1/28
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Terahertz Optoelectronic Property of Graphene: Substrate-Induced Effects on Plasmonic Characteristics

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