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GHz acousto-optic angular momentum with tunable topological charge

Author

Listed:
  • A. Pitanti

    (Leibniz-Institut im Forschungsverbund Berlin e. V.
    Dipartimento di Fisica E. Fermi
    CNR-Istituto Nanoscienze)

  • N. Ashurbekov

    (Leibniz-Institut im Forschungsverbund Berlin e. V.)

  • I. dePedro-Embid

    (Leibniz-Institut im Forschungsverbund Berlin e. V.)

  • M. Msall

    (Leibniz-Institut im Forschungsverbund Berlin e. V.
    Bowdoin College)

  • P. V. Santos

    (Leibniz-Institut im Forschungsverbund Berlin e. V.)

Abstract

Controlling the symmetry of optical and mechanical waves is pivotal to their full exploitation in technological applications and topology-linked fundamental physics experiments. Leveraging on the control of orbital angular momentum, we introduce here a device forming acoustic vortices which can impart an orbital angular momentum modulation at super-high-frequency on reflected light beams. Originated by shape-engineering of a single-contact bulk acoustic wave resonator, acoustic vortices are generated in a wide band of frequencies around 4 GHz with topological charge ranging from 1 to beyond 13 tunable by the device geometry and/or excitation frequency. With all electrical control and on-chip integration our device offers compact solutions for angular-momentum-based light communication, three-dimensional particle manipulation, as well as alternative interaction schemes for optomechanical devices.

Suggested Citation

  • A. Pitanti & N. Ashurbekov & I. dePedro-Embid & M. Msall & P. V. Santos, 2025. "GHz acousto-optic angular momentum with tunable topological charge," Nature Communications, Nature, vol. 16(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-63362-w
    DOI: 10.1038/s41467-025-63362-w
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    References listed on IDEAS

    as
    1. Simone Zanotto & Giorgio Biasiol & Paulo V. Santos & Alessandro Pitanti, 2022. "Metamaterial-enabled asymmetric negative refraction of GHz mechanical waves," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
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    3. Kai Melde & Andrew G. Mark & Tian Qiu & Peer Fischer, 2016. "Holograms for acoustics," Nature, Nature, vol. 537(7621), pages 518-522, September.
    4. Hao Tian & Junqiu Liu & Bin Dong & J. Connor Skehan & Michael Zervas & Tobias J. Kippenberg & Sunil A. Bhave, 2020. "Hybrid integrated photonics using bulk acoustic resonators," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
    5. Ling-Jun Kong & Weixuan Zhang & Peng Li & Xuyue Guo & Jingfeng Zhang & Furong Zhang & Jianlin Zhao & Xiangdong Zhang, 2022. "High capacity topological coding based on nested vortex knots and links," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
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