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Planar refraction and lensing of highly confined polaritons in anisotropic media

Author

Listed:
  • J. Duan

    (University of Oviedo
    CINN (CSIC-Universidad de Oviedo))

  • G. Álvarez-Pérez

    (University of Oviedo
    CINN (CSIC-Universidad de Oviedo))

  • A. I. F. Tresguerres-Mata

    (University of Oviedo)

  • J. Taboada-Gutiérrez

    (University of Oviedo
    CINN (CSIC-Universidad de Oviedo))

  • K. V. Voronin

    (Moscow Institute of Physics and Technology)

  • A. Bylinkin

    (CIC nanoGUNE BRTA
    Donostia International Physics Center (DIPC))

  • B. Chang

    (Technical University of Denmark)

  • S. Xiao

    (Technical University of Denmark)

  • S. Liu

    (Kansas State University)

  • J. H. Edgar

    (Kansas State University)

  • J. I. Martín

    (University of Oviedo
    CINN (CSIC-Universidad de Oviedo))

  • V. S. Volkov

    (Moscow Institute of Physics and Technology
    Skolkovo Innovation Center)

  • R. Hillenbrand

    (Basque Foundation for Science
    UPV/EHU)

  • J. Martín-Sánchez

    (University of Oviedo
    CINN (CSIC-Universidad de Oviedo))

  • A. Y. Nikitin

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

  • P. Alonso-González

    (University of Oviedo
    CINN (CSIC-Universidad de Oviedo))

Abstract

Refraction between isotropic media is characterized by light bending towards the normal to the boundary when passing from a low- to a high-refractive-index medium. However, refraction between anisotropic media is a more exotic phenomenon which remains barely investigated, particularly at the nanoscale. Here, we visualize and comprehensively study the general case of refraction of electromagnetic waves between two strongly anisotropic (hyperbolic) media, and we do it with the use of nanoscale-confined polaritons in a natural medium: α-MoO3. The refracted polaritons exhibit non-intuitive directions of propagation as they traverse planar nanoprisms, enabling to unveil an exotic optical effect: bending-free refraction. Furthermore, we develop an in-plane refractive hyperlens, yielding foci as small as λp/6, being λp the polariton wavelength (λ0/50 compared to the wavelength of free-space light). Our results set the grounds for planar nano-optics in strongly anisotropic media, with potential for effective control of the flow of energy at the nanoscale.

Suggested Citation

  • J. Duan & G. Álvarez-Pérez & A. I. F. Tresguerres-Mata & J. Taboada-Gutiérrez & K. V. Voronin & A. Bylinkin & B. Chang & S. Xiao & S. Liu & J. H. Edgar & J. I. Martín & V. S. Volkov & R. Hillenbrand &, 2021. "Planar refraction and lensing of highly confined polaritons in anisotropic media," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-24599-3
    DOI: 10.1038/s41467-021-24599-3
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    References listed on IDEAS

    as
    1. Ting Xu & Amit Agrawal & Maxim Abashin & Kenneth J. Chau & Henri J. Lezec, 2013. "All-angle negative refraction and active flat lensing of ultraviolet light," Nature, Nature, vol. 497(7450), pages 470-474, May.
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    Cited by:

    1. Mingze He & Joseph R. Matson & Mingyu Yu & Angela Cleri & Sai S. Sunku & Eli Janzen & Stefan Mastel & Thomas G. Folland & James H. Edgar & D. N. Basov & Jon-Paul Maria & Stephanie Law & Joshua D. Cald, 2023. "Polariton design and modulation via van der Waals/doped semiconductor heterostructures," Nature Communications, Nature, vol. 14(1), pages 1-8, December.

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