In situ characterization of laser-induced strong field ionization phenomena

Noam Shlomo; Eugene Frumker

doi:10.1038/s41377-025-01808-y

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In situ characterization of laser-induced strong field ionization phenomena

Original Articles

- In situ characterization of laser-induced strong field ionization phenomena
- Light: Science & Applications Vol. 14, Issue 6, Pages: 1673-1686(2025)
- Affiliations：
  
  Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- Author bio：
  
  Eugene Frumker (efrumker@bgu.ac.il)
- Funds：
- DOI：10.1038/s41377-025-01808-y
  CLC：
- Received：23 September 2024，
  
  Revised：27 January 2025，
  
  Accepted：04 March 2025，
  
  Published Online：21 April 2025，
  
  Published：30 June 2025
- Accepted：
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Shlomo, N. & Frumker, E. In situ characterization of laser-induced strong field ionization phenomena. Light: Science & Applications, 14, 1673-1686 (2025).
DOI：

Shlomo, N. & Frumker, E. In situ characterization of laser-induced strong field ionization phenomena. Light: Science & Applications, 14, 1673-1686 (2025). DOI： 10.1038/s41377-025-01808-y.

摘要

Abstract

Accurately characterizing the intensity and duration of strong-field femtosecond pulses within the interaction volume is crucial for attosecond science. However

this remains a major bottleneck

limiting accuracy of the strong-field

and in particular

high harmonic generation experiments. We present a novel scheme for the in situ measurement and control of spatially resolved strong-field femtosecond pulse intensity and duration within the interaction focal region. Our approach combines conjugate focal imaging with in situ ion measurements using gas densities pertinent to attosecond science experiments. Independent measurements in helium and argon

accompanied by a fitting to a strong-field ionization dynamic model

yield accurate and consistent results across a wide range of gas densities and underscores the significance of double ionization

as well as barrier suppression ionization. Direct spatially resolved characterization of the driving laser is a critical step towards resolving the averaging problem in the interaction volume

paving the way for more accurate and reliable attosecond experiments.

关键词

Keywords

references

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