Abstract:
:We demonstrate a tool for quantitative measurements in the extreme ultraviolet (EUV) spectral region measuring spatially resolved atomic ionization products at the focus of an EUV beam. The ionizing radiation is a comb of the 11(th)-15(th) harmonics of a Ti:Sapphire femtosecond laser beam produced in a Xenon gas jet. The spatial ion distribution at the focus of the harmonics is recorded using an ion microscope. Spatially resolved single- and two-photon ionization products of Argon and Helium are observed. From such ion distributions single- and two-photon generalized cross sections can be extracted by a self-calibrating method. The observation of spatially resolved two-EUV-photon ionization constitutes an initial step towards future single-shot temporal characterization of attosecond pulses.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Tsatrafyllis N,Bergues B,Schröder H,Veisz L,Skantzakis E,Gray D,Bodi B,Kuhn S,Tsakiris GD,Charalambidis D,Tzallas Pdoi
10.1038/srep21556subject
Has Abstractpub_date
2016-02-12 00:00:00pages
21556issn
2045-2322pii
srep21556journal_volume
6pub_type
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