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

Koshelev, KirillZograf, George P.Korolev, ViacheslavZalogina, AnastasiiaChoi, Duk-YongHollinger, RichardLuther-Davies, BarryZurch, MichaelKartashov, DaniilSpielmann, ChristianMakarov, SergeyKruk, SergeyKivshar, Yuri2023-10-0521-25 June978-9781-6654-1876-8http://hdl.handle.net/1885/301258Bound 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].application/pdfen-AU© 2021 IEEEGeneration of High Harmonics in Silicon Metasurfaces Boosted by Bound States in the Continuum202110.1109/CLEO/Europe-EQEC52157.2021.95420352022-08-07