Articles producció científica> Química Física i Inorgànica

Plasmonic enhancement of second harmonic generation from nonlinear RbTiOPO4 crystals by aggregates of silver nanostructures

  • Identification data

    Identifier: PC:1491
    Authors:
    Joan J. CarvajalLaura Sánchez-GarcíaChristos TserkezisMariola O RamírezPablo MolinaMagdalena AguilóFrancesc DíazJavier AizpuruaLuisa E. Bausá
    Abstract:
    DOI: 10.1364/OE.24.008491
  • Others:

    Author, as appears in the article.: Joan J. Carvajal; Laura Sánchez-García; Christos Tserkezis; Mariola O Ramírez; Pablo Molina; Magdalena Aguiló; Francesc Díaz; Javier Aizpurua; Luisa E. Bausá
    Department: Química Física i Inorgànica
    URV's Author/s: CARVAJAL MARTÍ, JOAN JOSEP; Laura Sánchez-García; Christos Tserkezis; Mariola O Ramírez; Pablo Molina; AGUILÓ DÍAZ, MAGDALENA; DÍAZ GONZÁLEZ, FRANCISCO MANUEL; Javier Aizpurua; Luisa E. Bausá
    Keywords: Harmonic generation Nonlinear photonic devices Nonlinear optics
    Abstract: We demonstrate a 60-fold enhancement of the second harmonic generation (SHG) response at the nanoscale in a hybrid metal-dielectric system. By using complex silver nanostructures photochemically deposited on the polar surface of a ferroelectric crystal, we tune the plasmonic resonances from the visible to the near-infrared (NIR) spectral region, matching either the SH or the fundamental frequency. In both cases the SHG signal at the metal-dielectric interface is enhanced, although with substantially different enhancement values: around 5 times when the plasmonic resonance is at the SH frequency or up to 60 times when it matches the fundamental NIR radiation. The results are consistent with the more spatially-extended near-field response of complex metallic nanostructures and can be well explained by taking into account the quadratic character of the SHG process. The work points out the potential of aggregates of silver nanostructures for enhancing optical nonlinearities at the nanoscale and provides an alternative approach for the development of nanometric nonlinear photonic devices in a scalable way.
    Research group: Física i Cristal·lografia de Nanomaterials Física i Cristal.lografia de Materials
    Thematic Areas: Chemistry Química Química
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 1094-4087
    Author identifier: 0000-0002-4389-7298; n/a; 0000-0002-2075-9036; n/a; 0000-0002-0048-5090; 0000-0001-6130-9579; 0000-0003-4581-4967; 0000-0002-1444-7589; n/a
    Record's date: 2016-05-19
    Last page: 8500
    Journal volume: 24
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://www.osapublishing.org/oe/abstract.cfm?uri=oe-24-8-8491
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Article's DOI: 10.1364/OE.24.008491
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2016
    First page: 8491
    Publication Type: Article Artículo Article
  • Keywords:

    Dispositius optoelectrònics
    Òptica no lineal
    Harmonic generation
    Nonlinear photonic devices
    Nonlinear optics
    Chemistry
    Química
    Química
    1094-4087
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