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Manipulation of the dephasing time by strong coupling between localized and propagating surface plasmon modes

Author

Listed:
  • Jinghuan Yang

    (Peking University
    Hokkaido University)

  • Quan Sun

    (Hokkaido University)

  • Kosei Ueno

    (Hokkaido University)

  • Xu Shi

    (Hokkaido University)

  • Tomoya Oshikiri

    (Hokkaido University)

  • Hiroaki Misawa

    (Hokkaido University
    National Chiao Tung University)

  • Qihuang Gong

    (Peking University
    Shanxi University)

Abstract

Strong coupling between two resonance modes leads to the formation of new hybrid modes exhibiting disparate characteristics owing to the reversible exchange of information between different uncoupled modes. Here, we realize the strong coupling between the localized surface plasmon resonance and surface plasmon polariton Bloch wave using multilayer nanostructures. An anticrossing behavior with a splitting energy of 144 meV can be observed from the far-field spectra. More importantly, we investigate the near-field properties in both the frequency and time domains using photoemission electron microscopy. In the frequency domain, the near-field spectra visually demonstrate normal-mode splitting and display the extent of coupling. Importantly, the variation of the dephasing time of the hybrid modes against the detuning is observed directly in the time domain. These findings signify the evolution of the dissipation and the exchange of information in plasmonic strong coupling systems and pave the way to manipulate the dephasing time of plasmon modes, which can benefit many applications of plasmonics.

Suggested Citation

  • Jinghuan Yang & Quan Sun & Kosei Ueno & Xu Shi & Tomoya Oshikiri & Hiroaki Misawa & Qihuang Gong, 2018. "Manipulation of the dephasing time by strong coupling between localized and propagating surface plasmon modes," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-07356-x
    DOI: 10.1038/s41467-018-07356-x
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    Cited by:

    1. Kiyoung Jo & Emanuele Marino & Jason Lynch & Zhiqiao Jiang & Natalie Gogotsi & Thomas P. Darlington & Mohammad Soroush & P. James Schuck & Nicholas J. Borys & Christopher B. Murray & Deep Jariwala, 2023. "Direct nano-imaging of light-matter interactions in nanoscale excitonic emitters," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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