@inproceedings{6939a2ea8d1745c5a2434955bd838cfb,
title = "Chiral Harmonic Generation by Quasi-Bound States in the Continuum",
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.",
author = "A. Antonov and M. Gorkunov and Y. Kivshar",
note = "Publisher Copyright: {\textcopyright} 2023 IEEE.; 17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023 ; Conference date: 11-09-2023 Through 16-09-2023",
year = "2023",
doi = "10.1109/Metamaterials58257.2023.10289562",
language = "English",
series = "17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "13--15",
booktitle = "17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023",
address = "United States",
}