Nonlinear Circular Dichroism in Mie-Resonant Nanoparticle Dimers

Kristina Frizyuk, Elizaveta Melik-Gaykazyan, Jae Hyuck Choi, Mihail I. Petrov, Hong Gyu Park, Yuri Kivshar

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We studied the nonlinear response of a dimer composed of two identical Mie-resonant dielectric nanoparticles illuminated normally by a circularly polarized light. We developed a general theory describing hybridization of multipolar modes of the coupled nanoparticles and reveal nonvanishing nonlinear circular dichroism (CD) in the second-harmonic generation (SHG) signal enhanced by the multipolar resonances in the dimer, provided its axis is oriented under an angle to the crystalline lattice of the dielectric material. We supported our multipolar hybridization theory by experimental results obtained for the AlGaAs dimers placed on an engineered substrate.

Original languageEnglish
JournalNano Letters
DOIs
Publication statusAccepted/In press - 2021

Keywords

  • Mie resonance
  • circular dichroism
  • hybridization
  • nanoparticle
  • second-harmonic generation

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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