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Enhanced Nonlinear Light Generation in Oligomers of Silicon Nanoparticles under Vector Beam Illumination

Kroychuk, M. K.; Shorokhov, Alexander S.; Yagudin, Damir F.; Shilkin, Daniil A.; Smirnova, Daria; Volkovskaya, Irina; Shcherbakov, Maxim R.; Shvets, Gennady; Fedyanin, Andrey


All-dielectric nanoparticle oligomers have recently emerged as promising candidates for nonlinear optical applications. Their highly resonant collective modes, however, are difficult to access by linearly polarized beams due to symmetry restraints. In this paper, we propose a new way to increase the efficiency of nonlinear processes in all-dielectric oligomers by tightly focused azimuthally polarized cylindrical vector beam illumination. We demonstrate two orders enhancement of the...[Show more]

CollectionsANU Research Publications
Date published: 2020-04-23
Type: Journal article
Source: Nano Letters
DOI: 10.1021/acs.nanolett.0c00393


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