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Nanoimaging of resonating hyperbolic polaritons in linear boron nitride antennas

Author

Listed:
  • F. J. Alfaro-Mozaz

    (CIC nanoGUNE)

  • P. Alonso-González

    (CIC nanoGUNE
    Universidad de Oviedo)

  • S. Vélez

    (CIC nanoGUNE)

  • I. Dolado

    (CIC nanoGUNE)

  • M. Autore

    (CIC nanoGUNE)

  • S. Mastel

    (CIC nanoGUNE)

  • F. Casanova

    (CIC nanoGUNE
    IKERBASQUE, Basque Foundation for Science)

  • L. E. Hueso

    (CIC nanoGUNE
    IKERBASQUE, Basque Foundation for Science)

  • P. Li

    (CIC nanoGUNE)

  • A. Y. Nikitin

    (CIC nanoGUNE
    IKERBASQUE, Basque Foundation for Science)

  • R. Hillenbrand

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

Abstract

Polaritons in layered materials—including van der Waals materials—exhibit hyperbolic dispersion and strong field confinement, which makes them highly attractive for applications including optical nanofocusing, sensing and control of spontaneous emission. Here we report a near-field study of polaritonic Fabry–Perot resonances in linear antennas made of a hyperbolic material. Specifically, we study hyperbolic phonon–polaritons in rectangular waveguide antennas made of hexagonal boron nitride (h-BN, a prototypical van der Waals crystal). Infrared nanospectroscopy and nanoimaging experiments reveal sharp resonances with large quality factors around 100, exhibiting atypical modal near-field patterns that have no analogue in conventional linear antennas. By performing a detailed mode analysis, we can assign the antenna resonances to a single waveguide mode originating from the hybridization of hyperbolic surface phonon–polaritons (Dyakonov polaritons) that propagate along the edges of the h-BN waveguide. Our work establishes the basis for the understanding and design of linear waveguides, resonators, sensors and metasurface elements based on hyperbolic materials and metamaterials.

Suggested Citation

  • F. J. Alfaro-Mozaz & P. Alonso-González & S. Vélez & I. Dolado & M. Autore & S. Mastel & F. Casanova & L. E. Hueso & P. Li & A. Y. Nikitin & R. Hillenbrand, 2017. "Nanoimaging of resonating hyperbolic polaritons in linear boron nitride antennas," Nature Communications, Nature, vol. 8(1), pages 1-8, August.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15624
    DOI: 10.1038/ncomms15624
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    Cited by:

    1. Irene Dolado & Carlos Maciel-Escudero & Elizaveta Nikulina & Evgenii Modin & Francesco Calavalle & Shu Chen & Andrei Bylinkin & Francisco Javier Alfaro-Mozaz & Jiahan Li & James H. Edgar & Fèlix Casan, 2022. "Remote near-field spectroscopy of vibrational strong coupling between organic molecules and phononic nanoresonators," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Jiade Li & Li Wang & Yani Wang & Zhiyu Tao & Weiliang Zhong & Zhibin Su & Siwei Xue & Guangyao Miao & Weihua Wang & Hailin Peng & Jiandong Guo & Xuetao Zhu, 2024. "Observation of the nonanalytic behavior of optical phonons in monolayer hexagonal boron nitride," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    3. 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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