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All-optical switching of an epsilon-near-zero plasmon resonance in indium tin oxide

Author

Listed:
  • Justus Bohn

    (University of Exeter)

  • Ting Shan Luk

    (Sandia National Laboratories
    Sandia National Laboratories)

  • Craig Tollerton

    (University of Exeter)

  • Sam W. Hutchings

    (University of Exeter)

  • Igal Brener

    (Sandia National Laboratories
    Sandia National Laboratories)

  • Simon Horsley

    (University of Exeter)

  • William L. Barnes

    (University of Exeter)

  • Euan Hendry

    (University of Exeter)

Abstract

Nonlinear optical devices and their implementation into modern nanophotonic architectures are constrained by their usually moderate nonlinear response. Recently, epsilon-near-zero (ENZ) materials have been found to have a strong optical nonlinearity, which can be enhanced through the use of cavities or nano-structuring. Here, we study the pump dependent properties of the plasmon resonance in the ENZ region in a thin layer of indium tin oxide (ITO). Exciting this mode using the Kretschmann-Raether configuration, we study reflection switching properties of a 60 nm layer close to the resonant plasmon frequency. We demonstrate a thermal switching mechanism, which results in a shift in the plasmon resonance frequency of 20 THz for a TM pump intensity of 70 GW cm−2. For degenerate pump and probe frequencies, we highlight an additional two-beam coupling contribution, not previously isolated in ENZ nonlinear optics studies, which leads to an overall pump induced change in reflection from 1% to 45%.

Suggested Citation

  • Justus Bohn & Ting Shan Luk & Craig Tollerton & Sam W. Hutchings & Igal Brener & Simon Horsley & William L. Barnes & Euan Hendry, 2021. "All-optical switching of an epsilon-near-zero plasmon resonance in indium tin oxide," Nature Communications, Nature, vol. 12(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-21332-y
    DOI: 10.1038/s41467-021-21332-y
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    Cited by:

    1. Arrigo Calzolari & Corey Oses & Cormac Toher & Marco Esters & Xiomara Campilongo & Sergei P. Stepanoff & Douglas E. Wolfe & Stefano Curtarolo, 2022. "Plasmonic high-entropy carbides," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Wallace Jaffray & Federico Belli & Enrico G. Carnemolla & Catalina Dobas & Mark Mackenzie & John Travers & Ajoy K. Kar & Matteo Clerici & Clayton DeVault & Vladimir M. Shalaev & Alexandra Boltasseva &, 2022. "Near-zero-index ultra-fast pulse characterization," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    3. Soham Saha & Benjamin T. Diroll & Mustafa Goksu Ozlu & Sarah N. Chowdhury & Samuel Peana & Zhaxylyk Kudyshev & Richard D. Schaller & Zubin Jacob & Vladimir M. Shalaev & Alexander V. Kildishev & Alexan, 2023. "Engineering the temporal dynamics of all-optical switching with fast and slow materials," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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