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Attosecond field emission

Author

Listed:
  • H. Y. Kim

    (Universität Rostock)

  • M. Garg

    (Max Planck Institute for Solid State Research)

  • S. Mandal

    (Universität Rostock)

  • L. Seiffert

    (Universität Rostock)

  • T. Fennel

    (Universität Rostock)

  • E. Goulielmakis

    (Universität Rostock)

Abstract

Field emission of electrons underlies great advances in science and technology, ranging from signal processing at ever higher frequencies1 to imaging of the atomic-scale structure of matter2 with picometre resolution. The advancing of electron microscopy techniques to enable the complete visualization of matter on the native spatial (picometre) and temporal (attosecond) scales of electron dynamics calls for techniques that can confine and examine the field emission on sub-femtosecond time intervals. Intense laser pulses have paved the way to this end3,4 by demonstrating femtosecond confinement5,6 and sub-optical cycle control7,8 of the optical field emission9 from nanostructured metals. Yet the measurement of attosecond electron pulses has remained elusive. We used intense, sub-cycle light transients to induce optical field emission of electron pulses from tungsten nanotips and a weak replica of the same transient to directly investigate the emission dynamics in real time. Access to the temporal properties of the electron pulses rescattering off the tip surface, including the duration τ = (53 as ± 5 as) and chirp, and the direct exploration of nanoscale near fields open new prospects for research and applications at the interface of attosecond physics and nano-optics.

Suggested Citation

  • H. Y. Kim & M. Garg & S. Mandal & L. Seiffert & T. Fennel & E. Goulielmakis, 2023. "Attosecond field emission," Nature, Nature, vol. 613(7945), pages 662-666, January.
    • Handle: RePEc:nat:nature:v:613:y:2023:i:7945:d:10.1038_s41586-022-05577-1
    DOI: 10.1038/s41586-022-05577-1
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