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Enhanced Second-Harmonic Generation with Structured Light in AlGaAs Nanoparticles Governed by Magnetic Response

Melik-Gaykazyan, Elizaveta; Koshelev, Kirill; Choi, J. H.; Kruk, Sergey; Park, H.-G.; Fedyanin, Andrey A.; Kivshar, Yuri


We employ structured light for the second-harmonic generation from subwavelength AlGaAs nanoparticles that support both electric and magnetic multipolar Mie resonances. The vectorial structure of the pump beam allows addressing selectively Mie-resonant modes and control the strength of the generated nonlinear fields. We observe experimentally the enhancement of the second-harmonic generation for the azimuthally polarized vector beams near the magnetic dipole resonance, and match our...[Show more]

CollectionsANU Research Publications
Date published: 2019
Type: Journal article
Source: Journal of Experimental and Theoretical Physics Letters
DOI: 10.1134/S0021364019020036


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