Nonlinear Optical Magnetism Revealed by Second-Harmonic Generation in Nanoantennas

Nano Letters
Sergey KrukYuri Kivshar

Abstract

Nonlinear effects at the nanoscale are usually associated with the enhancement of electric fields in plasmonic structures. Recently emerged new platform for nanophotonics based on high-index dielectric nanoparticles utilizes optically induced magnetic response via multipolar Mie resonances and provides novel opportunities for nanoscale nonlinear optics. Here, we observe strong second-harmonic generation from AlGaAs nanoantennas driven by both electric and magnetic resonances. We distinguish experimentally the contribution of electric and magnetic nonlinear response by analyzing the structure of polarization states of vector beams in the second-harmonic radiation. We control continuously the transition between electric and magnetic nonlinearities by tuning polarization of the optical pump. Our results provide a direct observation of nonlinear optical magnetism through selective excitation of multipolar nonlinear modes in nanoantennas.

References

Jul 29, 2006·Science·Matthias W KleinStefan Linden
May 16, 2007·Physical Review Letters·Sami KujalaJari Turunen
Apr 16, 2007·Optics Express·Matthias W KleinStefan Linden
Oct 4, 2012·Physical Review Letters·S LindenM Wegener
Feb 26, 2013·Physical Review Letters·Alec RoseDavid R Smith
Oct 17, 2014·Nano Letters·Maxim R ShcherbakovYuri S Kivshar
Jul 15, 2016·Optics Express·V F GiliG Leo
Nov 1, 2016·Nano Letters·Rocio Camacho-MoralesDragomir N Neshev
Nov 20, 2016·Science·Arseniy I KuznetsovBoris Luk'yanchuk

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Citations

Jan 10, 2019·Nanoscale·Rocio Camacho-MoralesMartti Kauranen
Dec 15, 2018·Advanced Materials·Wei-Yi TsaiDin Ping Tsai
Feb 9, 2019·Optics Express·Miguel A G MandujanoBernardo S Mendoza
Sep 11, 2019·Optics Express·Grégoire SaerensMaria Timofeeva
Jan 18, 2020·Science·Kirill KoshelevYuri Kivshar
Jun 30, 2019·Optics Express·Kyungwan YooNamkyoo Park
May 15, 2021·Optics Letters·Michele CelebranoCostantino De Angelis
May 14, 2021·Nano Letters·Kristina FrizyukYuri Kivshar

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