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Electronically tunable extraordinary optical transmission in graphene plasmonic ribbons coupled to subwavelength metallic slit arrays

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  • Seyoon Kim

    (Thomas J. Watson Laboratory of Applied Physics, California Institute of Technology)

  • Min Seok Jang

    (Thomas J. Watson Laboratory of Applied Physics, California Institute of Technology
    School of Electrical Engineering, Korea Advanced Institute of Science and Technology)

  • Victor W. Brar

    (Thomas J. Watson Laboratory of Applied Physics, California Institute of Technology
    Kavli Nanoscience Institute, California Institute of Technology)

  • Yulia Tolstova

    (Thomas J. Watson Laboratory of Applied Physics, California Institute of Technology)

  • Kelly W. Mauser

    (Thomas J. Watson Laboratory of Applied Physics, California Institute of Technology)

  • Harry A. Atwater

    (Thomas J. Watson Laboratory of Applied Physics, California Institute of Technology
    Kavli Nanoscience Institute, California Institute of Technology)

Abstract

Subwavelength metallic slit arrays have been shown to exhibit extraordinary optical transmission, whereby tunnelling surface plasmonic waves constructively interfere to create large forward light propagation. The intricate balancing needed for this interference to occur allows for resonant transmission to be highly sensitive to changes in the environment. Here we demonstrate that extraordinary optical transmission resonance can be coupled to electrostatically tunable graphene plasmonic ribbons to create electrostatic modulation of mid-infrared light. Absorption in graphene plasmonic ribbons situated inside metallic slits can efficiently block the coupling channel for resonant transmission, leading to a suppression of transmission. Full-wave simulations predict a transmission modulation of 95.7% via this mechanism. Experimental measurements reveal a modulation efficiency of 28.6% in transmission at 1,397 cm−1, corresponding to a 2.67-fold improvement over transmission without a metallic slit array. This work paves the way for enhancing light modulation in graphene plasmonics by employing noble metal plasmonic structures.

Suggested Citation

  • Seyoon Kim & Min Seok Jang & Victor W. Brar & Yulia Tolstova & Kelly W. Mauser & Harry A. Atwater, 2016. "Electronically tunable extraordinary optical transmission in graphene plasmonic ribbons coupled to subwavelength metallic slit arrays," Nature Communications, Nature, vol. 7(1), pages 1-8, November.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12323
    DOI: 10.1038/ncomms12323
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    Cited by:

    1. Ju Young Kim & Juho Park & Gregory R. Holdman & Jacob T. Heiden & Shinho Kim & Victor W. Brar & Min Seok Jang, 2022. "Full 2π tunable phase modulation using avoided crossing of resonances," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

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