Generation of High Harmonics in Silicon Metasurfaces Boosted by Bound States in the Continuum

Koshelev, KirillZograf, GeorgeKorolev, ViacheslavZalogina, AnastasiaChoi, Duk YongHollinger, RichardLuther-Davies, BarryZurch, MichaelKartashov, DaniilSpielmann, ChristianMakarov, SergeyKruk, SergeyKivshar, Yuri2025-06-242025-06-249781665418768ORCID:/0000-0002-2747-5036/work/161269389ORCID:/0000-0002-3410-812X/work/163398109ORCID:/0000-0002-5339-3085/work/163474824http://www.scopus.com/inward/record.url?scp=85117622486&partnerID=8YFLogxKhttps://hdl.handle.net/1885/733764678Bound states in the continuum (BICs) are lossless states predicted in quantum mechanics in 1929, and for the last decade, received special attention in optics and photonics as a versatile tool to achieve giant quality factors (Q factors) [1]. For ordered arrays of subwavelength meta-atoms, metasurfaces, with broken in-plane symmetry, it was shown that Q factor of quasi-BICs can be unambiguously controlled by variation of the unit cell asymmetry parameter [2].enPublisher Copyright: © 2021 IEEE.Generation of High Harmonics in Silicon Metasurfaces Boosted by Bound States in the Continuum202110.1109/CLEO/Europe-EQEC52157.2021.954203585117622486