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Plasmon-assisted high-harmonic generation in graphene

Author

Listed:
  • Joel D. Cox

    (ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology)

  • Andrea Marini

    (ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology)

  • F. Javier García de Abajo

    (ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology
    ICREA-Institució Catalana de Recerca i Estudis Avançats, Passeig LLuís Companys 23)

Abstract

High-harmonic generation in condensed-matter systems is both a source of fundamental insight into quantum electron motion and a promising candidate to realize compact ultraviolet and ultrafast light sources. While graphene is anticipated to efficiently generate high-order harmonics due to its anharmonic charge-carrier dispersion, experiments performed on extended samples using THz illumination have revealed only a weak effect. The situation is further complicated by the enormous electromagnetic field intensities required by this highly nonperturbative nonlinear optical phenomenon. Here we argue that the large light intensity required for high-harmonic generation to occur can be reached by exploiting localized plasmons in doped graphene nanostructures. We demonstrate through rigorous time-domain simulations that the synergistic combination of strong plasmonic near-field enhancement and a pronounced intrinsic nonlinearity result in efficient broadband high-harmonic generation within a single material. Our results support the strong potential of nanostructured graphene as a robust, electrically tunable platform for high-harmonic generation.

Suggested Citation

  • Joel D. Cox & Andrea Marini & F. Javier García de Abajo, 2017. "Plasmon-assisted high-harmonic generation in graphene," Nature Communications, Nature, vol. 8(1), pages 1-7, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14380
    DOI: 10.1038/ncomms14380
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    Cited by:

    1. Jia-Qi Wang & Yuan-Hao Yang & Ming Li & Haiqi Zhou & Xin-Biao Xu & Ji-Zhe Zhang & Chun-Hua Dong & Guang-Can Guo & C.-L. Zou, 2022. "Synthetic five-wave mixing in an integrated microcavity for visible-telecom entanglement generation," Nature Communications, Nature, vol. 13(1), pages 1-7, December.

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