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Launching of hyperbolic phonon-polaritons in h-BN slabs by resonant metal plasmonic antennas

Author

Listed:
  • P. Pons-Valencia

    (CSIC-Universidad de Zaragoza)

  • F. J. Alfaro-Mozaz

    (CIC nanoGUNE)

  • M. M. Wiecha

    (CIC nanoGUNE
    Johann Wolfgang Goethe-Universität)

  • V. Biolek

    (CIC nanoGUNE
    Brno University of Technology)

  • I. Dolado

    (CIC nanoGUNE)

  • S. Vélez

    (CIC nanoGUNE
    ETH Zürich)

  • P. Li

    (CIC nanoGUNE
    Huazhong University of Science and Technology)

  • P. Alonso-González

    (Universidad de Oviedo)

  • F. Casanova

    (CIC nanoGUNE
    IKERBASQUE, Basque Foundation for Science)

  • L. E. Hueso

    (CIC nanoGUNE
    IKERBASQUE, Basque Foundation for Science)

  • L. Martín-Moreno

    (CSIC-Universidad de Zaragoza)

  • R. Hillenbrand

    (IKERBASQUE, Basque Foundation for Science
    CIC NanoGUNE and EHU/UPV)

  • A. Y. Nikitin

    (IKERBASQUE, Basque Foundation for Science
    Donostia International Physics Center (DIPC))

Abstract

Launching and manipulation of polaritons in van der Waals materials offers novel opportunities for field-enhanced molecular spectroscopy and photodetection, among other applications. Particularly, the highly confined hyperbolic phonon polaritons (HPhPs) in h-BN slabs attract growing interest for their capability of guiding light at the nanoscale. An efficient coupling between free space photons and HPhPs is, however, hampered by their large momentum mismatch. Here, we show —by far-field infrared spectroscopy, infrared nanoimaging and numerical simulations— that resonant metallic antennas can efficiently launch HPhPs in thin h-BN slabs. Despite the strong hybridization of HPhPs in the h-BN slab and Fabry-Pérot plasmonic resonances in the metal antenna, the efficiency of launching propagating HPhPs in h-BN by resonant antennas exceeds significantly that of the non-resonant ones. Our results provide fundamental insights into the launching of HPhPs in thin polar slabs by resonant plasmonic antennas, which will be crucial for phonon-polariton based nanophotonic devices.

Suggested Citation

  • P. Pons-Valencia & F. J. Alfaro-Mozaz & M. M. Wiecha & V. Biolek & I. Dolado & S. Vélez & P. Li & P. Alonso-González & F. Casanova & L. E. Hueso & L. Martín-Moreno & R. Hillenbrand & A. Y. Nikitin, 2019. "Launching of hyperbolic phonon-polaritons in h-BN slabs by resonant metal plasmonic antennas," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-11143-7
    DOI: 10.1038/s41467-019-11143-7
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    Cited by:

    1. María Barra-Burillo & Unai Muniain & Sara Catalano & Marta Autore & Fèlix Casanova & Luis E. Hueso & Javier Aizpurua & Ruben Esteban & Rainer Hillenbrand, 2021. "Microcavity phonon polaritons from the weak to the ultrastrong phonon–photon coupling regime," Nature Communications, Nature, vol. 12(1), pages 1-9, December.

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