Optimizing broadband terahertz modulation with hybrid graphene/metasurface structures

S. F. Shi; B. Zeng; H. L. Han; X. Hong; H. Z. Tsai; H. S. Jung; A. Zettl; M. F. Crommie; F. Wang

doi:10.1021/nl503670d

Optimizing broadband terahertz modulation with hybrid graphene/metasurface structures

S. F. Shi
, B. Zeng
, H. L. Han
, X. Hong
, H. Z. Tsai
, H. S. Jung
, A. Zettl
, M. F. Crommie
, F. Wang

Department of Physics

Research output: Contribution to journal › Article › peer-review

122 Citations (Scopus)

Abstract

We demonstrate efficient terahertz (THz) modulation by coupling graphene strongly with a broadband THz metasurface device. This THz metasurface, made of periodic gold slit arrays, shows near unity broadband transmission, which arises from coherent radiation of the enhanced local-field in the slits. Utilizing graphene as an active load with tunable conductivity, we can significantly modify the local-field enhancement and strongly modulate the THz wave transmission. This hybrid device also provides a new platform for future nonlinear THz spectroscopy study of graphene.

Original language	English
Pages (from-to)	372-377
Number of pages	6
Journal	Nano letters
Volume	15
Issue number	1
DOIs	https://doi.org/10.1021/nl503670d
Publication status	Published - 2015 Jan 14

All Science Journal Classification (ASJC) codes

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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10.1021/nl503670d

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abstract = "We demonstrate efficient terahertz (THz) modulation by coupling graphene strongly with a broadband THz metasurface device. This THz metasurface, made of periodic gold slit arrays, shows near unity broadband transmission, which arises from coherent radiation of the enhanced local-field in the slits. Utilizing graphene as an active load with tunable conductivity, we can significantly modify the local-field enhancement and strongly modulate the THz wave transmission. This hybrid device also provides a new platform for future nonlinear THz spectroscopy study of graphene.",

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AU - Shi, S. F.

AU - Zeng, B.

AU - Han, H. L.

AU - Hong, X.

AU - Tsai, H. Z.

AU - Jung, H. S.

AU - Zettl, A.

AU - Crommie, M. F.

AU - Wang, F.

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N2 - We demonstrate efficient terahertz (THz) modulation by coupling graphene strongly with a broadband THz metasurface device. This THz metasurface, made of periodic gold slit arrays, shows near unity broadband transmission, which arises from coherent radiation of the enhanced local-field in the slits. Utilizing graphene as an active load with tunable conductivity, we can significantly modify the local-field enhancement and strongly modulate the THz wave transmission. This hybrid device also provides a new platform for future nonlinear THz spectroscopy study of graphene.

AB - We demonstrate efficient terahertz (THz) modulation by coupling graphene strongly with a broadband THz metasurface device. This THz metasurface, made of periodic gold slit arrays, shows near unity broadband transmission, which arises from coherent radiation of the enhanced local-field in the slits. Utilizing graphene as an active load with tunable conductivity, we can significantly modify the local-field enhancement and strongly modulate the THz wave transmission. This hybrid device also provides a new platform for future nonlinear THz spectroscopy study of graphene.

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JO - Nano letters

JF - Nano letters

IS - 1

ER -

Optimizing broadband terahertz modulation with hybrid graphene/metasurface structures

Abstract

All Science Journal Classification (ASJC) codes

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