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

Elena Drobnyh; Ruth Pachter; Maxim Sukharev

doi:10.1021/acs.jpcc.9b00257

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

Elena Drobnyh, Ruth Pachter, Maxim Sukharev

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

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 WS₂ 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 language	English (US)
Pages (from-to)	6898-6904
Number of pages	7
Journal	Journal of Physical Chemistry C
Volume	123
Issue number	11
DOIs	https://doi.org/10.1021/acs.jpcc.9b00257
State	Published - Mar 21 2019

ASJC Scopus subject areas

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

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10.1021/acs.jpcc.9b00257

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title = "Harmonic Generation by Metal Nanostructures Optically Coupled to Two-Dimensional Transition-Metal Dichalcogenide",

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 WS2 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.",

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AU - Drobnyh, Elena

AU - Pachter, Ruth

AU - Sukharev, Maxim

PY - 2019/3/21

Y1 - 2019/3/21

N2 - 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 WS2 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.

AB - 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 WS2 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.

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

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