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Experimental demonstration of tunable graphene-polaritonic hyperbolic metamaterial

Brouillet, Jeremy and Papadakis, Georgia T. and Atwater, Harry A. (2019) Experimental demonstration of tunable graphene-polaritonic hyperbolic metamaterial. Optics Express, 27 (21). pp. 30225-30232. ISSN 1094-4087. https://resolver.caltech.edu/CaltechAUTHORS:20190725-142646779

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Abstract

Tuning the macroscopic dielectric response on demand holds potential for actively tunable metaphotonics and optical devices. In recent years, graphene has been extensively investigated as a tunable element in nanophotonics. Significant theoretical work has been devoted on the tuning the hyperbolic properties of graphene/dielectric heterostructures; however, until now, such a motif has not been demonstrated experimentally. Here we focus on a graphene/polaritonic dielectric metamaterial, with strong optical resonances arising from the polar response of the dielectric, which are, in general, difficult to actively control. By controlling the doping level of graphene via external bias we experimentally demonstrate a wide range of tunability from a Fermi level of E_F=0 eV to E_F=0.5 eV, which yields an effective epsilon-near-zero crossing and tunable dielectric properties, verified through spectroscopic ellipsometry and transmission measurements.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1364/oe.27.030225DOIArticle
https://arxiv.org/abs/1906.10663arXivDiscussion Paper
ORCID:
AuthorORCID
Papadakis, Georgia T.0000-0001-8107-9221
Atwater, Harry A.0000-0001-9435-0201
Alternate Title:Experimental demonstration of tunable graphene hyperbolic metamaterial
Additional Information:© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. Received 10 Jul 2019; revised 11 Sep 2019; accepted 17 Sep 2019; published 4 Oct 2019. Funding: National Science Foundation (1144469, Graduate Research Fellowship); TomKat Center for Sustainable Energy, Stanford University. The authors declare that there are no conflicts of interest related to this article.
Funders:
Funding AgencyGrant Number
NSF Graduate Research FellowshipDGE-1144469
TomKat Center for Sustainable EnergyUNSPECIFIED
Stanford UniversityUNSPECIFIED
Issue or Number:21
Record Number:CaltechAUTHORS:20190725-142646779
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190725-142646779
Official Citation:Jeremy Brouillet, Georgia T. Papadakis, and and Harry A. Atwater, "Experimental demonstration of tunable graphene-polaritonic hyperbolic metamaterial," Opt. Express 27, 30225-30232 (2019)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97424
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:25 Jul 2019 21:35
Last Modified:25 Nov 2020 17:17

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