Nonlinear Beam Shaping with Plasmonic Metasurfaces

Shay Keren-Zur, Ori Avayu, Lior Michaeli, Tal Ellenbogen

Research output: Contribution to journalArticlepeer-review

Abstract

We present here a method for generating second-harmonic beams with tailored beam profiles using nonlinear metasurfaces based on split ring resonators. By manipulating both the phase and the amplitude of the quadratic nonlinear coefficient locally, at the single inclusion level, the emitted second-harmonic wavefront is perfectly controlled. These concepts are demonstrated experimentally by the far-field generation of second-harmonic Airy and vortex beams from nonlinear binary phase computer-generated holograms and the perfect near-field generation of a Hermite-Gauss beam by precise amplitude and phase construction. We believe that these demonstrations open the door to use nonlinear metasurfaces for a variety of integrated nonlinear beam shaping devices. (Figure Presented).

Original languageEnglish
Pages (from-to)117-123
Number of pages7
JournalACS Photonics
Volume3
Issue number1
DOIs
StatePublished - 20 Jan 2016

Keywords

  • harmonic generation and mixing
  • laser beam shaping
  • metamaterials
  • nonlinear optical materials
  • photonic crystals

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