Harmonic Generation by Metal Nanostructures Optically Coupled to Two-Dimensional Transition-Metal Dichalcogenide

Elena Drobnyh, Ruth Pachter, Maxim Sukharev

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Abstract

Rigorous electrodynamical simulations based on the nonlinear Drude model are performed to investigate the influence of strong coupling on harmonic generation by periodic metal gratings. It is shown that a thin dispersive material with a thirδ-order nonlinearity strongly coupled to surface plasmon-polaritons significantly affects even harmonics generated solely by the metal. The physical nature of this effect is explained using a simple analytical model and further supported by numerical simulations. Furthermore, the behavior of the second and third harmonics is investigated as a function of various physical parameters of the model material system, revealing highly complex dynamics. The nonlinear optical response of two-δimensional few-layer WS 2 with both seconδ- and thirδ-order susceptibilities coupled to a periodic plasmonic grating is shown to have a significant effect on the second harmonic generation of the metal.

Original languageEnglish (US)
Pages (from-to)6898-6904
Number of pages7
JournalJournal of Physical Chemistry C
Volume123
Issue number11
DOIs
StatePublished - Mar 21 2019

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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