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Full 2π tunable phase modulation using avoided crossing of resonances

Author

Listed:
  • Ju Young Kim

    (Korea Advanced Institute of Science and Technology)

  • Juho Park

    (Korea Advanced Institute of Science and Technology)

  • Gregory R. Holdman

    (University of Wisconsin-Madison)

  • Jacob T. Heiden

    (Korea Advanced Institute of Science and Technology)

  • Shinho Kim

    (Korea Advanced Institute of Science and Technology)

  • Victor W. Brar

    (University of Wisconsin-Madison)

  • Min Seok Jang

    (Korea Advanced Institute of Science and Technology)

Abstract

Active metasurfaces have been proposed as one attractive means of achieving high-resolution spatiotemporal control of optical wavefronts, having applications such as LIDAR and dynamic holography. However, achieving full, dynamic phase control has been elusive in metasurfaces. In this paper, we unveil an electrically tunable metasurface design strategy that operates near the avoided crossing of two resonances, one a spectrally narrow, over-coupled resonance and the other with a high resonance frequency tunability. This strategy displays an unprecedented upper limit of 4π range of dynamic phase modulation with no significant variations in optical amplitude, by enhancing the phase tunability through utilizing two coupled resonances. A proof-of-concept metasurface is justified analytically and verified numerically in an experimentally accessible platform using quasi-bound states in the continuum and graphene plasmon resonances, with results showing a 3π phase modulation capacity with a uniform reflection amplitude of ~0.65.

Suggested Citation

  • 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.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-29721-7
    DOI: 10.1038/s41467-022-29721-7
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    References listed on IDEAS

    as
    1. Jie Sun & Erman Timurdogan & Ami Yaacobi & Ehsan Shah Hosseini & Michael R. Watts, 2013. "Large-scale nanophotonic phased array," Nature, Nature, vol. 493(7431), pages 195-199, January.
    2. 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.
    3. David Fattal & Zhen Peng & Tho Tran & Sonny Vo & Marco Fiorentino & Jim Brug & Raymond G. Beausoleil, 2013. "A multi-directional backlight for a wide-angle, glasses-free three-dimensional display," Nature, Nature, vol. 495(7441), pages 348-351, March.
    4. Chi-Fan Chen & Cheol-Hwan Park & Bryan W. Boudouris & Jason Horng & Baisong Geng & Caglar Girit & Alex Zettl & Michael F. Crommie & Rachel A. Segalman & Steven G. Louie & Feng Wang, 2011. "Controlling inelastic light scattering quantum pathways in graphene," Nature, Nature, vol. 471(7340), pages 617-620, March.
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