Plasmon enhanced second harmonic generation by periodic arrays of triangular nanoholes coupled to quantum emitters

Elena Drobnyh, Maxim Sukharev

    Research output: Contribution to journalArticlepeer-review

    15 Scopus citations

    Abstract

    Optical properties of periodic arrays of nanoholes of a triangular shape with experimentally realizable parameters are examined in both linear and nonlinear regimes. By utilizing a fully vectorial three-dimensional approach based on the nonlinear hydrodynamic Drude model describing metal coupled to Maxwell's equations and Bloch equations for molecular emitters, we analyze linear transmission, reflection, and nonlinear power spectra. Rigorous numerical calculations demonstrating second and third harmonic generation by the triangular hole arrays are performed. It is shown that both the Coulomb interaction of conduction electrons and the convective term contribute on equal footing to the nonlinear response of metal. It is demonstrated that the energy conversion efficiency in the second harmonic process is the highest when the system is pumped at the localized surface plasmon resonance. When molecular emitters are placed on a surface of the hole array line shapes, the second harmonic signal exhibits three peaks corresponding to second harmonics of the localized surface plasmon mode and upper and lower polaritonic states.

    Original languageEnglish (US)
    Article number094706
    JournalJournal of Chemical Physics
    Volume152
    Issue number9
    DOIs
    StatePublished - Mar 7 2020

    ASJC Scopus subject areas

    • General Physics and Astronomy
    • Physical and Theoretical Chemistry

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