Single sub-fs XUV pulses: Generation and measurement

Reinhard Kienberger, Ferenc Krausz

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


The change from a zero transition to the maximum amplitude of the electric field of visible light lasts shorter than one femtosecond (1 fs = 10 -15 s). By precisely controlling the hyperfast electric field oscillations in a short laser pulse we developed a measuring apparatus - the Atomic Transient Recorder (ATR) - like an ultrafast stopwatch. This apparatus is capable of measuring the duration of atomic processes with an accuracy of less than 100 attoseconds (1 as = 10 -18 s) which is the typical duration of electronic processes (transients) deep inside atoms. A 250-attosecond X-ray pulse initiates the atomic process to be measured and the attosecond stopwatch at the same time. This new measuring method now allows for the first time the observation of ultrafast processes in the electron shell of atoms.

Original languageEnglish
Article number171
Pages (from-to)644-658
Number of pages15
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2005
Externally publishedYes
Event26th International Congress on High-Speed Photography and Photonics - Alexandria, VA, United States
Duration: 20 Sep 200424 Sep 2004


Dive into the research topics of 'Single sub-fs XUV pulses: Generation and measurement'. Together they form a unique fingerprint.

Cite this