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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Description/Abstract

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
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
Date Deposited: 03 May 2012 10:41
Last Modified: 14 Apr 2014 11:40
Research Funder: EPSRC
Projects:
NANOSTRUCTURED PHOTONIC METAMATERIALS
Funded by: EPSRC (EP/G060363/1)
Led by: Nikolay Zheludev
1 January 2010 to 31 December 2015
URI: http://eprints.soton.ac.uk/id/eprint/337810

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