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  • Letter
  • Open Access

Generation of ultrashort ion pulses from ultrafast electron-stimulated desorption

M. C. Chirita Mihaila, G. L. Szabo, A. Redl, M. Goldberger, A. Niggas, and R. A. Wilhelm*

  • TU Wien, Institute of Applied Physics, 1040 Vienna, Austria

  • *Contact author: wilhelm@iap.tuwien.ac.at
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Phys. Rev. Research 6, L032066 – Published 16 September, 2024

DOI: https://doi.org/10.1103/PhysRevResearch.6.L032066

Abstract

We present an efficient method to produce laser-triggered proton pulses well below 500 ps pulse width at keV energies. We use femtosecond photoelectron pulses emitted from a cathode to enable ultrafast electron-stimulated desorption of adsorbates on a stainless steel plate under ultrahigh vacuum conditions. While direct photoionization of atoms to form well-timed ion pulses can suffer from a laser-focus-limited large starting volume, in our method the two-dimensional starting plane of the ions is defined with nanometer precision at a solid surface. We clearly outline how the method could be used in the future to efficiently produce ion beam pulses in the (sub)picosecond range for pump-probe experiments with ions.

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Phys. Rev. Research 6, L032066– Published 16 September, 2024
  • Received 14 March 2024
  • Revised 3 May 2024
  • Accepted 9 August 2024
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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