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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. KivsharEmail author
Article
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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 magnetic dipole resonance, and match our observations with the numerical decomposion of the Mie-type multipoles for the fundamental and generated second-harmonic fields.

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Copyright information

© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  • E. V. Melik-Gaykazyan
    • 1
    • 2
  • K. L. Koshelev
    • 1
    • 3
  • J.-H. Choi
    • 4
  • S. S. Kruk
    • 2
  • H.-G. Park
    • 4
  • A. A. Fedyanin
    • 1
  • Y. S. Kivshar
    • 2
    Email author
  1. 1.Faculty of PhysicsLomonosov Moscow State UniversityMoscowRussia
  2. 2.Nonlinear Physics CentreAustralian National UniversityCanberraAustralia
  3. 3.Information TechnologiesMechanics and Optics UniversitySt. PetersburgRussia
  4. 4.Department of PhysicsKorea UniversitySeoulRepublic of Korea

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