Electronic modulation of infrared radiation in graphene plasmonic resonators

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All matter at finite temperatures emits electromagnetic radiation due to the thermally induced motion of particles and quasiparticles. Dynamic control of this radiation could enable the design of novel infrared sources; however, the spectral characteristics of the radiated power are dictated by the electromagnetic energy density and emissivity, which are ordinarily fixed properties of the material and temperature. Here we experimentally demonstrate tunable electronic control of blackbody emission from graphene plasmonic resonators on a silicon nitride substrate. It is shown that the graphene resonators produce antenna-coupled blackbody radiation, which manifests as narrow spectral emission peaks in the mid-infrared. By continuously varying the nanoresonator carrier density, the frequency and intensity of these spectral features can be modulated via an electrostatic gate. This work opens the door for future devices that may control blackbody radiation at timescales beyond the limits of conventional thermo-optic modulation
Publisher
NATURE PUBLISHING GROUP
Issue Date
2015-05
Language
English
Article Type
Article
Keywords

LIGHT; EMISSION; SPECTROSCOPY; FILMS; PHOTOLUMINESCENCE

Citation

NATURE COMMUNICATIONS, v.6

ISSN
2041-1723
DOI
10.1038/ncomms8032
URI
http://hdl.handle.net/10203/208972
Appears in Collection
EE-Journal Papers(저널논문)
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