Chiral Harmonic Generation by Quasi-Bound States in the Continuum

A. Antonov*, M. Gorkunov, Y. Kivshar

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    Quasi-bound states in the continuum (quasi-BICs) of dielectric metasurfaces, selectively coupled to circularly polarized waves, provide maximum linear-optical chirality. We consider how they can empower chiral nonlinear-optical processes. We demonstrate that using arbitrarily polarized pumping wave one can generate circularly polarized harmonics at the chiral quasi-BIC wavelength. Conversely, pumping at such a wavelength results in giant harmonic circular dichroism. We design maximum-chiral metasurfaces based on different semiconductor materials and simulate generation of second and third harmonics. We compare various scenarios and reveal feasible limits of generation enhancement and chirality.

    Original languageEnglish
    Title of host publication17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages13-15
    Number of pages3
    ISBN (Electronic)9798350332445
    DOIs
    Publication statusPublished - 2023
    Event17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023 - Crete, Greece
    Duration: 11 Sept 202316 Sept 2023

    Publication series

    Name17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023

    Conference

    Conference17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023
    Country/TerritoryGreece
    CityCrete
    Period11/09/2316/09/23

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