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Imaging the field inside nanophotonic accelerators

Author

Listed:
  • Tal Fishman

    (Technion – Israel Institute of Technology)

  • Urs Haeusler

    (Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
    Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue)

  • Raphael Dahan

    (Technion – Israel Institute of Technology)

  • Michael Yannai

    (Technion – Israel Institute of Technology)

  • Yuval Adiv

    (Technion – Israel Institute of Technology)

  • Tom Lenkiewicz Abudi

    (Technion – Israel Institute of Technology)

  • Roy Shiloh

    (Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU))

  • Ori Eyal

    (Technion – Israel Institute of Technology)

  • Peyman Yousefi

    (Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU))

  • Gadi Eisenstein

    (Technion – Israel Institute of Technology)

  • Peter Hommelhoff

    (Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU))

  • Ido Kaminer

    (Technion – Israel Institute of Technology)

Abstract

Controlling optical fields on the subwavelength scale is at the core of nanophotonics. Laser-driven nanophotonic particle accelerators promise a compact alternative to conventional radiofrequency-based accelerators. Efficient electron acceleration in nanophotonic devices critically depends on achieving nanometer control of the internal optical nearfield. However, these nearfields have so far been inaccessible due to the complexity of the devices and their geometrical constraints, hampering the design of future nanophotonic accelerators. Here we image the field distribution inside a nanophotonic accelerator, for which we developed a technique for frequency-tunable deep-subwavelength resolution of nearfields based on photon-induced nearfield electron-microscopy. Our experiments, complemented by 3D simulations, unveil surprising deviations in two leading nanophotonic accelerator designs, showing complex field distributions related to intricate 3D features in the device and its fabrication tolerances. We envision an extension of our method for full 3D field tomography, which is key for the future design of highly efficient nanophotonic devices.

Suggested Citation

  • Tal Fishman & Urs Haeusler & Raphael Dahan & Michael Yannai & Yuval Adiv & Tom Lenkiewicz Abudi & Roy Shiloh & Ori Eyal & Peyman Yousefi & Gadi Eisenstein & Peter Hommelhoff & Ido Kaminer, 2023. "Imaging the field inside nanophotonic accelerators," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
  • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-38857-z
    DOI: 10.1038/s41467-023-38857-z
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    References listed on IDEAS

    as
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