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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).

Record type: Article


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.

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Published date: 27 January 2012
Organisations: Optoelectronics Research Centre


Local EPrints ID: 337810
PURE UUID: 2007c62a-0a14-43d7-913a-747b5a351202

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Date deposited: 03 May 2012 10:41
Last modified: 18 Jul 2017 06:00

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Author: Sukosin Thongrattanasiri
Author: Frank Koppens
Author: F. García de Abajo

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