Enhanced third-harmonic generation induced by nonlinear field resonances in plasmonic-graphene metasurfaces
Nonlinear metasurfaces offer new paradigm for boosting optical effect beyond limitations of conventional materials. In this work, we present an alternative way to produce pronounced third-harmonic generation (THG) based on nonlinear field resonances rather than linear field enhancement, which is a typical strategy for achieving a strong nonlinear response. By designing and studying a nonlinear plasmonic-graphene metasurface at terahertz regime with hybrid-guided modes and bound states in the continuum modes, it is found that a THG with a narrow bandwidth can be observed, thanks to the strong resonance generated between a weak THG field and these modes. Such strong nonlinear field resonance greatly enhances the photon-photon interactions, thus resulting in a large effective nonlinear coefficient of the whole system. This finding provides new opportunity for studying nonlinear optical metasurfaces.
Medienart: |
E-Artikel |
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Erscheinungsjahr: |
2020 |
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Erschienen: |
2020 |
Enthalten in: |
Zur Gesamtaufnahme - volume:28 |
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Enthalten in: |
Optics express - 28(2020), 9 vom: 27. Apr., Seite 13234-13242 |
Sprache: |
Englisch |
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Beteiligte Personen: |
Liu, Yulian [VerfasserIn] |
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Links: |
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Anmerkungen: |
Date Revised 14.05.2020 published: Print Citation Status PubMed-not-MEDLINE |
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doi: |
10.1364/OE.391294 |
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funding: |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLM309867673 |
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650 | 4 | |a Journal Article | |
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700 | 1 | |a Zhou, Qingjia |e verfasserin |4 aut | |
700 | 1 | |a Cao, Yanyan |e verfasserin |4 aut | |
700 | 1 | |a Fu, Yangyang |e verfasserin |4 aut | |
700 | 1 | |a Gao, Lei |e verfasserin |4 aut | |
700 | 1 | |a Chen, Huanyang |e verfasserin |4 aut | |
700 | 1 | |a Xu, Yadong |e verfasserin |4 aut | |
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