An ultra-broadband multilayered graphene absorber

Handle URI:
http://hdl.handle.net/10754/562552
Title:
An ultra-broadband multilayered graphene absorber
Authors:
Amin, Muhammad; Farhat, Mohamed; Bagci, Hakan ( 0000-0003-3867-5786 )
Abstract:
An ultra-broadband multilayered graphene absorber operating at terahertz (THz) frequencies is proposed. The absorber design makes use of three mechanisms: (i) The graphene layers are asymmetrically patterned to support higher order surface plasmon modes that destructively interfere with the dipolar mode and generate electromagnetically induced absorption. (ii) The patterned graphene layers biased at different gate voltages backedup with dielectric substrates are stacked on top of each other. The resulting absorber is polarization dependent but has an ultra-broadband of operation. (iii) Graphene's damping factor is increased by lowering its electron mobility to 1000cm 2=Vs. Indeed, numerical experiments demonstrate that with only three layers, bandwidth of 90% absorption can be extended upto 7THz, which is drastically larger than only few THz of bandwidth that can be achieved with existing metallic/graphene absorbers. © 2013 Optical Society of America.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Electrical Engineering Program; Computational Electromagnetics Laboratory
Publisher:
Optical Society of America
Journal:
Optics Express
Issue Date:
2013
DOI:
10.1364/OE.21.029938
Type:
Article
ISSN:
10944087
Appears in Collections:
Articles; Electrical Engineering Program; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorAmin, Muhammaden
dc.contributor.authorFarhat, Mohameden
dc.contributor.authorBagci, Hakanen
dc.date.accessioned2015-08-03T10:42:24Zen
dc.date.available2015-08-03T10:42:24Zen
dc.date.issued2013en
dc.identifier.issn10944087en
dc.identifier.doi10.1364/OE.21.029938en
dc.identifier.urihttp://hdl.handle.net/10754/562552en
dc.description.abstractAn ultra-broadband multilayered graphene absorber operating at terahertz (THz) frequencies is proposed. The absorber design makes use of three mechanisms: (i) The graphene layers are asymmetrically patterned to support higher order surface plasmon modes that destructively interfere with the dipolar mode and generate electromagnetically induced absorption. (ii) The patterned graphene layers biased at different gate voltages backedup with dielectric substrates are stacked on top of each other. The resulting absorber is polarization dependent but has an ultra-broadband of operation. (iii) Graphene's damping factor is increased by lowering its electron mobility to 1000cm 2=Vs. Indeed, numerical experiments demonstrate that with only three layers, bandwidth of 90% absorption can be extended upto 7THz, which is drastically larger than only few THz of bandwidth that can be achieved with existing metallic/graphene absorbers. © 2013 Optical Society of America.en
dc.publisherOptical Society of Americaen
dc.titleAn ultra-broadband multilayered graphene absorberen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentElectrical Engineering Programen
dc.contributor.departmentComputational Electromagnetics Laboratoryen
dc.identifier.journalOptics Expressen
kaust.authorAmin, Muhammaden
kaust.authorFarhat, Mohameden
kaust.authorBagci, Hakanen
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