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Highly Confined Hybridized Polaritons in Scalable van der Waals Heterostructure Resonators

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Download Hi-Res ImageDownload to MS-PowerPointCite This:ACS Nano 2024, 18, 27, 17492-17499
    Article

    Highly Confined Hybridized Polaritons in Scalable van der Waals Heterostructure Resonators
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    • Yue Luo*
      Yue Luo
      School of Electronic Science and Engineering, Southeast University, Nanjing, Jiangsu 210096, China
      Center for Nanoscale Systems, Harvard University, Cambridge, Massachusetts 02138, United States
      Department of Physics, Harvard University, Cambridge, Massachusetts 02138, United States
      *Email: [email protected]
      More by Yue Luo
      Orcidhttps://orcid.org/0000-0002-2757-5395
    • Ji-Hoon Park
      Ji-Hoon Park
      Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
      More by Ji-Hoon Park
    • Jiadi Zhu
      Jiadi Zhu
      Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
      More by Jiadi Zhu
    • Michele Tamagnone
      Michele Tamagnone
      John A. Paulson School of Engineering and Applied Science, Harvard University, Cambridge, Massachusetts 02138, United States
      More by Michele Tamagnone
    • Federico Capasso
      Federico Capasso
      John A. Paulson School of Engineering and Applied Science, Harvard University, Cambridge, Massachusetts 02138, United States
      More by Federico Capasso
    • Tomás Palacios
      Tomás Palacios
      Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
      More by Tomás Palacios
    • Jing Kong
      Jing Kong
      Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
      More by Jing Kong
      Orcidhttps://orcid.org/0000-0003-0551-1208
    • William L. Wilson*
      William L. Wilson
      Center for Nanoscale Systems, Harvard University, Cambridge, Massachusetts 02138, United States
      *Email: [email protected]
      More by William L. Wilson
      Orcidhttps://orcid.org/0000-0003-2755-7610
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    ACS Nano

    Cite this: ACS Nano 2024, 18, 27, 17492–17499
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acsnano.3c13047
    Published June 28, 2024
    Copyright © 2024 American Chemical Society
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    Abstract

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    The optimization of nanoscale optical devices and structures will enable the exquisite control of planar optical fields. Polariton manipulation is the primary strategy in play. In two-dimensional heterostructures, the ability to excite mixed optical modes offers an additional control in device design. Phonon polaritons in hexagonal boron nitride have been a common system explored for the control of near-infrared radiation. Their hybridization with graphene plasmons makes these mixed phonon polariton modes in hexagonal boron nitride more appealing in terms of enabling active control of electrodynamic properties with a reduction of propagation losses. Optical resonators can be added to confine these hybridized plasmon–phonon polaritons deeply into the subwavelength regime, with these structures featuring high quality factors. Here, we show a scalable approach for the design and fabrication of heterostructure nanodisc resonators patterned in chemical vapor deposition-grown monolayer graphene and h-BN sheets. Real-space mid-infrared nanoimaging reveals the nature of hybridized polaritons in the heterostructures. We simulate and experimentally demonstrate localized hybridized polariton modes in heterostructure nanodisc resonators and demonstrate that those nanodiscs can collectively couple to the waveguide. High quality factors for the nanodiscs are measured with nanoscale Fourier transform infrared spectroscopy. Our results offer practical strategies to realize scalable nanophotonic devices utilizing low-loss hybridized polaritons for applications such as on-chip optical components.

    Copyright © 2024 American Chemical Society

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    Supporting Information

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acsnano.3c13047.

    • Details on numerical simulation of the near-field reflectivity of the nanodiscs (PDF)

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    ACS Nano

    Cite this: ACS Nano 2024, 18, 27, 17492–17499
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acsnano.3c13047
    Published June 28, 2024
    Copyright © 2024 American Chemical Society
    Request reuse permissions

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