Integrating Plasmonic Metals and 2D Transition Metal Dichalcogenides for Enhanced Nonlinear Frequency Conversion: Paper No. 1072413

Jeremy Dunklin, Gregory Forcherio, Luigi Bonacina, Jeremy Riporto, Yannick Mugnier, R. Dantec, Mourad Benamara, D. Roper

Research output: Contribution to conferencePaper

1 Scopus Citations

Abstract

Surface plasmon resonant nanoantennas can confine incident energy onto two-dimensional (2D) transition metal dichalcogenides (TMD) to enhance efficiency of harmonic conversion to higher energies, which is otherwise limited by the intrinsic A-scale interaction length. Second harmonic generation (SHG) from nanoantenna-decorated 2D TMD was heuristically examined with hyper Rayleigh scattering (HRS), multi-photon microscopy, electron energy loss spectroscopy (EELS), and discrete dipole computation. HRS experimentally quantified the frequency dependence of the second-order nonlinear susceptibility, x(2), for liquid-exfoliated WS2. Measured x(2) fell within 21% of independent density functional theory (DFT) calculations, overcoming the known 100-1000x overestimation of microscopy approaches. EELS supported design of nanoantennas for integration with TMD. Overall SHG conversion efficiencies from chemical vapor-deposited (CVD) 4x105 nm2 MoS2 crystals on silicon dioxide were enhanced up to 0.025 % W-1 in the presence of by single 150 nm Au nanoshell monomers and dimers, ostensibly due to augmented local plasmonic fields.
Original languageAmerican English
Number of pages7
DOIs
StatePublished - 2018
EventSPIE Nanoscience + Engineering - San Diego, California
Duration: 19 Aug 201823 Aug 2018

Conference

ConferenceSPIE Nanoscience + Engineering
CitySan Diego, California
Period19/08/1823/08/18

NREL Publication Number

  • NREL/CP-5900-72811

Keywords

  • 2D materials
  • electron energy loss spectroscopy
  • hyper Rayleigh scattering
  • multiphoton microscopy
  • nonlinear optics
  • plasmon resonance
  • second harmonic generation

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