Xu, LeiRahmani, MohsenSmirnova, DariaZangeneh Kamali, KhosroZhang, GuoquanNeshev, DragomirMiroshnichenko, Andrey2021-04-152021-04-152304-6732http://hdl.handle.net/1885/229996We design an asymmetric nonlinear optical nanoantenna composed of a dielectric nanodisc and an adjacent nanobar. The proposed composite structure made of AlGaAs exhibits resonant response at both the fundamental and doubled frequencies. Being driven by the strong magnetic dipole resonance at the pump wavelength and a high-quality mode at the harmonic wavelength, the efficient second-harmonic radiation is generated predominantly along the vertical directions under the normally incident plane-wave excitation.This research was funded by the Australian Research Council (ARC), ARC Discovery Early Career Research Fellowship (DE170100250) and the Russian Foundation for Basic Research (Grants No. 16-02-00547, 18-02-00381), UNSW Scientia Fellowship and NSFC (No. 11774182, No. 91750204).application/pdfen-AU© 2018 by the authorshttps://creativecommons.org/licenses/by/4.0/scatteringsecond-harmonic generationMie resonancenanoantennamultipolar interference2018-09-1710.3390/photonics50300292020-11-23Creative Commons Attribution (CC BY) license