Phase-matching and peak nonlinearity enhanced third-harmonic generation in graphene plasmonic coupler

Strong nonlinear optical effects generally require giant optical fields interacting with the nonlinear media. Doped graphene hosts electrically tunable plasmons with long lifetimes that interact strongly with light. We investigate a graphene plasmonic coupler and explore two mechanisms to pursue hig...

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Main Authors: Wu, Tingting, Luo, Yu, Maier, Stefan A., Wei, Lei
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2019
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Online Access:https://hdl.handle.net/10356/85495
http://hdl.handle.net/10220/48229
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-854952020-03-07T13:57:27Z Phase-matching and peak nonlinearity enhanced third-harmonic generation in graphene plasmonic coupler Wu, Tingting Luo, Yu Maier, Stefan A. Wei, Lei School of Electrical and Electronic Engineering CINTRA CNRS/NTU/THALES Research Techno Plaza DRNTU::Engineering::Electrical and electronic engineering Graphene Photonics Strong nonlinear optical effects generally require giant optical fields interacting with the nonlinear media. Doped graphene hosts electrically tunable plasmons with long lifetimes that interact strongly with light. We investigate a graphene plasmonic coupler and explore two mechanisms to pursue highly efficient third-harmonic generation (THG): (1) phase matching of graphene plasmons at fundamental- and third-harmonic frequencies and (2) peak third-order nonlinear susceptibility of doped graphene. The third-harmonic wave is mainly converted from the evanescent mode of the incident light and the THG efficiency is found to be enhanced by over 10 orders of magnitude compared with a bare monolayer graphene. The significantly enhanced nonlinear optical responses in the graphene plasmonic coupler make this configuration an ideal platform for the development of alternative frequency generators and for signal processing at midinfrared and terahertz frequencies. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) Published version 2019-05-16T05:51:58Z 2019-12-06T16:04:53Z 2019-05-16T05:51:58Z 2019-12-06T16:04:53Z 2019 Journal Article Wu, T., Luo, Y., Maier, S. A., & Wei, L. (2019). Phase-matching and peak nonlinearity enhanced third-harmonic generation in graphene plasmonic coupler. Physical Review Applied, 11(1), 014049-. doi:10.1103/PhysRevApplied.11.014049 https://hdl.handle.net/10356/85495 http://hdl.handle.net/10220/48229 10.1103/PhysRevApplied.11.014049 en Physical Review Applied © 2019 American Physical Society. All rights reserved. This paper was published in Physical Review Applied and is made available with permission of American Physical Society. 7 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Electrical and electronic engineering
Graphene
Photonics
spellingShingle DRNTU::Engineering::Electrical and electronic engineering
Graphene
Photonics
Wu, Tingting
Luo, Yu
Maier, Stefan A.
Wei, Lei
Phase-matching and peak nonlinearity enhanced third-harmonic generation in graphene plasmonic coupler
description Strong nonlinear optical effects generally require giant optical fields interacting with the nonlinear media. Doped graphene hosts electrically tunable plasmons with long lifetimes that interact strongly with light. We investigate a graphene plasmonic coupler and explore two mechanisms to pursue highly efficient third-harmonic generation (THG): (1) phase matching of graphene plasmons at fundamental- and third-harmonic frequencies and (2) peak third-order nonlinear susceptibility of doped graphene. The third-harmonic wave is mainly converted from the evanescent mode of the incident light and the THG efficiency is found to be enhanced by over 10 orders of magnitude compared with a bare monolayer graphene. The significantly enhanced nonlinear optical responses in the graphene plasmonic coupler make this configuration an ideal platform for the development of alternative frequency generators and for signal processing at midinfrared and terahertz frequencies.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Wu, Tingting
Luo, Yu
Maier, Stefan A.
Wei, Lei
format Article
author Wu, Tingting
Luo, Yu
Maier, Stefan A.
Wei, Lei
author_sort Wu, Tingting
title Phase-matching and peak nonlinearity enhanced third-harmonic generation in graphene plasmonic coupler
title_short Phase-matching and peak nonlinearity enhanced third-harmonic generation in graphene plasmonic coupler
title_full Phase-matching and peak nonlinearity enhanced third-harmonic generation in graphene plasmonic coupler
title_fullStr Phase-matching and peak nonlinearity enhanced third-harmonic generation in graphene plasmonic coupler
title_full_unstemmed Phase-matching and peak nonlinearity enhanced third-harmonic generation in graphene plasmonic coupler
title_sort phase-matching and peak nonlinearity enhanced third-harmonic generation in graphene plasmonic coupler
publishDate 2019
url https://hdl.handle.net/10356/85495
http://hdl.handle.net/10220/48229
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