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

Kirill Koshelev,George Zograf,Viacheslav Korolev,Anastasia Zalogina,Duk-Yong Choi,Richard Hollinger,Barry Luther-Davies,Michael Zürch,Daniil Kartashov,Christian Spielmann, Sergey Makarov,Sergey Kruk,Yuri Kivshar

2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC)（2021）

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Abstract

Bound 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] .

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Key words

received special attention,quantum mechanics,lossless states,BICs,bound states,silicon metasurfaces boosted,high harmonics,quasiBICs,subwavelength meta-atoms,Q factor,giant quality factors,photonics

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