Monolithic LiNbO3Metasurface for Steering and Polarization-Encoding of Second-Harmonic Generation in the Visible

Luca Carletti, Attilio Zilli, Fabio Moia, Andrea Toma, Marco Finazzi, Costantino De Angelis, Dragomir Neshev, Michele Celebrano

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    Nonlinear metasurfaces are a key-asset in nanophotonics, given their ability to scale down nonlinear optics to sub-m thicknesses. To date, they are mainly realized using small-gap semiconductors, which hampers applications in the visible (VIS) range. High refractive-index transparent materials, such as lithium niobate (LiNbO 3 ), could be used to circumvent this limitation [1] , [2] , [3] , but efficient operation in this strategic spectral window is hindered by nanofabrication challenges. Here we show the first monolithic nonlinear metasurface based on LiNbO 3 for second-harmonic generation (SHG) in the VIS range with efficiency comparable to recent work in the near-infrared [3]. By tuning the pump polarization, we demonstrate efficient steering and polarization encoding of SHG, opening novel opportunities for nonlinear meta-optics.

    Original languageEnglish
    Title of host publication2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9781665418768
    DOIs
    Publication statusPublished - Jun 2021
    Event2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021 - Munich, Germany
    Duration: 21 Jun 202125 Jun 2021

    Publication series

    Name2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021

    Conference

    Conference2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021
    Country/TerritoryGermany
    CityMunich
    Period21/06/2125/06/21

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