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Collective near-field coupling and nonlocal phenomena in infrared-phononic metasurfaces for nano-light canalization

Author

Listed:
  • Peining Li

    (Huazhong University of Science and Technology
    CIC nanoGUNE BRTA)

  • Guangwei Hu

    (National University of Singapore
    City University of New York)

  • Irene Dolado

    (CIC nanoGUNE BRTA)

  • Mykhailo Tymchenko

    (City University of New York)

  • Cheng-Wei Qiu

    (National University of Singapore)

  • Francisco Javier Alfaro-Mozaz

    (CIC nanoGUNE BRTA)

  • Fèlix Casanova

    (CIC nanoGUNE BRTA
    IKERBASQUE, Basque Foundation for Science)

  • Luis E. Hueso

    (CIC nanoGUNE BRTA
    IKERBASQUE, Basque Foundation for Science)

  • Song Liu

    (Kansas State University)

  • James H. Edgar

    (Kansas State University)

  • Saül Vélez

    (ETH Zürich)

  • Andrea Alu

    (City University of New York
    City University of New York)

  • Rainer Hillenbrand

    (IKERBASQUE, Basque Foundation for Science
    CIC nanoGUNE BRTA and Department of Electricity and Electronics, UPV/ EHU)

Abstract

Polaritons – coupled excitations of photons and dipolar matter excitations – can propagate along anisotropic metasurfaces with either hyperbolic or elliptical dispersion. At the transition from hyperbolic to elliptical dispersion (corresponding to a topological transition), various intriguing phenomena are found, such as an enhancement of the photonic density of states, polariton canalization and hyperlensing. Here, we investigate theoretically and experimentally the topological transition, the polaritonic coupling and the strong nonlocal response in a uniaxial infrared-phononic metasurface, a grating of hexagonal boron nitride (hBN) nanoribbons. By hyperspectral infrared nanoimaging, we observe a synthetic transverse optical phonon resonance (strong collective near-field coupling of the nanoribbons) in the middle of the hBN Reststrahlen band, yielding a topological transition from hyperbolic to elliptical dispersion. We further visualize and characterize the spatial evolution of a deeply subwavelength canalization mode near the transition frequency, which is a collimated polariton that is the basis for hyperlensing and diffraction-less propagation.

Suggested Citation

  • Peining Li & Guangwei Hu & Irene Dolado & Mykhailo Tymchenko & Cheng-Wei Qiu & Francisco Javier Alfaro-Mozaz & Fèlix Casanova & Luis E. Hueso & Song Liu & James H. Edgar & Saül Vélez & Andrea Alu & Ra, 2020. "Collective near-field coupling and nonlocal phenomena in infrared-phononic metasurfaces for nano-light canalization," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-17425-9
    DOI: 10.1038/s41467-020-17425-9
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    Cited by:

    1. Neda Alsadat Aghamiri & Guangwei Hu & Alireza Fali & Zhen Zhang & Jiahan Li & Sivacarendran Balendhran & Sumeet Walia & Sharath Sriram & James H. Edgar & Shriram Ramanathan & Andrea Alù & Yohannes Aba, 2022. "Reconfigurable hyperbolic polaritonics with correlated oxide metasurfaces," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Sergey Korchagin & Ekaterina Romanova & Denis Serdechnyy & Petr Nikitin & Vil Baiburin & Yerbol Yerbayev, 2021. "Mathematical Modeling of the Electrophysical Properties of a Layered Nanocomposite Based on Silicon with an Ordered Structure," Mathematics, MDPI, vol. 9(24), pages 1-9, December.

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