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    Second Harmonic Generation from a Single Plasmonic Nanorod Strongly Coupled to a WSe₂ Monolayer

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    2009.08060.pdf (2.214Mb)
    Links to Files
    https://arxiv.org/abs/2009.08060
    Permanent Link
    http://hdl.handle.net/11603/20079
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    • UMBC Physics Department
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    Author/Creator
    Li, Chentao
    Lu, Xin
    Srivastava, Ajit
    Storm, S. David
    Gelfand, Rachel
    Pelton, Matthew
    Sukharev, Maxim
    Harutyunyan, Hayk
    Date
    2020-09-17
    Type of Work
    19 pages
    Text
    journal articles preprints
    Citation of Original Publication
    Li, Chentao; Lu, Xin; Srivastava, Ajit; Storm, S. David; Gelfand, Rachel; Pelton, Matthew; Sukharev, Maxim; Second Harmonic Generation from a Single Plasmonic Nanorod Strongly Coupled to a WSe2 Monolayer; Optics (2020); https://arxiv.org/abs/2009.08060
    Rights
    This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
    Abstract
    Monolayer transition metal dichalcogenides, coupled to metal plasmonic nanocavities, have recently emerged as new platforms for strong light-matter interactions. These systems are expected to have nonlinear optical properties that will enable them to be used as entangled photon sources, compact wave-mixing devices, and other elements for classical and quantum photonic technologies. Here we report the first experimental investigation of the nonlinear properties of these strongly coupled systems, by observing second harmonic generation from a WSe₂ monolayer strongly coupled to a single gold nanorod. The pump frequency dependence of the second harmonic signal displays a pronounced splitting that can be explained by a coupled oscillator model with second-order nonlinearities. Rigorous numerical simulations utilizing a nonperturbative nonlinear hydrodynamic model of conduction electrons support this interpretation and reproduce experimental results. Our study thus lays the groundwork for understanding the nonlinear properties of strongly coupled nanoscale systems.


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    Albin O. Kuhn Library & Gallery
    University of Maryland, Baltimore County
    1000 Hilltop Circle
    Baltimore, MD 21250
    www.umbc.edu/scholarworks

    Contact information:
    Email: scholarworks-group@umbc.edu
    Phone: 410-455-3021


    If you wish to submit a copyright complaint or withdrawal request, please email mdsoar-help@umd.edu.