Novel nonlinear chiroptical scattering effects

Brad Kerrigan, Ruidong Ji, John Kerr, Emilija Petronijevic, Hyunah Kwon, Peer Fischer, Ventsislav K. Valev

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding

Abstract

Recently, novel chiroptical harmonic scattering effects were reported, and the associated techniques have emerged as promising tools for characterizing the chirality of light scatterers, randomly dispersed in isotropic liquids. So far, the associated new physical effects have only been demonstrated in a handful of materials. For each material, only one size distribution has been studied. While third-harmonic chiroptical scattering, in the Rayleigh regime, has previously been demonstrated from Ag nanohelices, the data were only collected for right-handed scattering, with respect to the wavevector of incident light. Here, we present third-harmonic chiroptical scattering from Ag nanohelices with larger dimensions than those studied before. Moreover, we provide data in both right-handed and forward scattering. Our data are consistent with hyper-Rayleigh scattering and demonstrate that the recorded signal follows a cubic law with respect to the illumination laser power. Additionally, the obtained third-harmonic ellipticities clearly distinguish between left- and right-handed Ag nanohelices. The results reported here contribute to establish the applicability of chiroptical harmonic scattering to scatterers with various sizes, randomly dispersed in isotropic liquids.

Original languageEnglish
Title of host publicationNanophotonics X
EditorsDavid L. Andrews, Angus J. Bain, Antonio Ambrosio
Place of PublicationU. S. A.
PublisherSPIE
ISBN (Electronic)9781510673007
DOIs
Publication statusPublished - 10 Jun 2024
EventNanophotonics X 2024 - Strasbourg, France
Duration: 7 Apr 202412 Apr 2024

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12991
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceNanophotonics X 2024
Country/TerritoryFrance
CityStrasbourg
Period7/04/2412/04/24

Keywords

  • chirality
  • chiroptical harmonic scattering
  • nanophotonics
  • Plasmonics
  • third-harmonic

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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