Complete optical absorption in periodically patterned graphene

Thongrattanasiri, Sukosin, Koppens, Frank and García de Abajo, F. (2012) Complete optical absorption in periodically patterned graphene. Physical Review Letters, 108, (4), 047401-[5 pages]. (doi:10.1103/PhysRevLett.108.047401).


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We demonstrate that 100% light absorption can take place in a single patterned sheet of doped graphene. General analysis shows that a planar array of small particles with losses exhibits full absorption under critical-coupling conditions provided the cross section of each individual particle is comparable to the area of the lattice unit cell. Specifically, arrays of doped graphene nanodisks display full absorption when supported on a substrate under total internal reflection and also when lying on a dielectric layer coating a metal. Our results are relevant for infrared light detectors and sources, which can be made tunable via electrostatic doping of graphene.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1103/PhysRevLett.108.047401
ISSNs: 0031-9007 (print)
1079-7114 (electronic)
Related URLs:
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions : Faculty of Physical Sciences and Engineering > Optoelectronics Research Centre
ePrint ID: 337810
Accepted Date and Publication Date:
27 January 2012Published
Date Deposited: 03 May 2012 10:41
Last Modified: 31 Mar 2016 14:27
Nanostructured Photonic Metamaterials
Funded by: EPSRC (EP/G060363/1)
Led by: Nikolay Zheludev
1 January 2010 to 31 December 2015

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