= Ferenc Krausz
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{tag=Physicist}
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= F. Krausz
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<Ferenc Krausz> coauthored a 2001 demonstration of <attosecond> timing using <photoionization>. A synchronized visible <electric field> changes the <energy> distribution of <photoelectrons> released by a soft-<X-ray> <optical pulse>. Scanning their relative delay converts an otherwise inaccessible time interval into a measured <electron> <spectrum>. The report inferred a soft-<X-ray> duration of $650\pm150$ <attoseconds> and demonstrated an instrument for probing <electron> dynamics on that scale.<Attosecond metrology by Michael Hentschel and others>[Abstract and Figures 1–5: two-colour photoionization, delay-dependent spectra and inferred pulse duration]{ref}
A <physicist> who leads research in <attosecond physics>.<Prof. Dr. Ferenc Krausz by Max Planck Institute of Quantum Optics>[Weitere Informationen: Head of Attosecond Physics Division]{ref}
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{title=Portrait of <Ferenc Krausz>}
{description=Thorsten Naeser / Max-Planck-Institut für Quantenoptik; existing cropped derivative. https://creativecommons.org/licenses/by/2.0/[CC BY 2.0], via Wikimedia Commons.}
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