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Giant Nonlinear Response at the Nanoscale Driven by Bound States in the Continuum

Carletti, Luca; Koshelev, Kirill; De Angelis, Constantino; Kivshar, Yuri


Being motivated by the recent prediction of high-Q modes in subwavelength dielectric resonators inspired by bound states in the continuum (BIC), we study the second-harmonic generation from isolated subwavelength AlGaAs nanoantennas. We reveal that nonlinear effects at the nanoscale can be enhanced dramatically provided the resonator parameters are tuned to the BIC regime. We predict a record-high conversion efficiency for nanoscale resonators that exceeds by 2 orders of magnitude the...[Show more]

CollectionsANU Research Publications
Date published: 2018
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.121.033903
Access Rights: Open Access


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