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Tunable graphene-based hyperbolic metamaterials: experimental demonstration and outlook (Conference Presentation)

Papadakis, Georgia Theano and Atwater, Harry A. and Davoyan, Artur R. (2020) Tunable graphene-based hyperbolic metamaterials: experimental demonstration and outlook (Conference Presentation). In: Smart Photonic and Optoelectronic Integrated Circuits XXII. Proceedings of SPIE. No.11284. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 112840U. ISBN 9781510633315. https://resolver.caltech.edu/CaltechAUTHORS:20200311-123904671

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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 EF = 0 eV to EF = 0.5 eV, which yields an effective epsilon-near-zero crossing and tunable dielect.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.2545064DOIArticle
ORCID:
AuthorORCID
Papadakis, Georgia Theano0000-0001-8107-9221
Atwater, Harry A.0000-0001-9435-0201
Davoyan, Artur R.0000-0002-4662-1158
Additional Information:© 2020 Society of Photo-Optical Instrumentation Engineers (SPIE).
Series Name:Proceedings of SPIE
Issue or Number:11284
Record Number:CaltechAUTHORS:20200311-123904671
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20200311-123904671
Official Citation:Georgia Theano Papadakis, Harry A. Atwater Jr., and Artur Davoyan "Tunable graphene-based hyperbolic metamaterials: experimental demonstration and outlook (Conference Presentation)", Proc. SPIE 11284, Smart Photonic and Optoelectronic Integrated Circuits XXII, 112840U (9 March 2020); https://doi.org/10.1117/12.2545064
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:101854
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:11 Mar 2020 19:55
Last Modified:25 Nov 2020 17:18

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