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

E. V. Melik-Gaykazyan, K. L. Koshelev, J. H. Choi, S. S. Kruk, H. G. Park, A. A. Fedyanin, Y. S. Kivshar

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

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 observations with the numerical decomposition of the Mie-type multipoles for the fundamental and generated second-harmonic fields.

Original languageEnglish
Pages (from-to)131-135
Number of pages5
JournalJETP Letters
Volume109
Issue number2
DOIs
Publication statusPublished - 2019 Jan 1

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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