Attosecond Electron Spectroscopy Using a Novel Interferometric Pump-Probe Technique

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Title Attosecond Electron Spectroscopy Using a Novel Interferometric Pump-Probe Technique
Author Mauritsson, J.; Remetter, T.; Swoboda, M.; Klunder, K.; L'Huiller, A.; Schafer, K. J.; Ghafur, Omair; Kelkensberg, F; Siu, W.; Johnsson, P.; Vrakking, M. J. J.; Znakovskaya, I.; Uphues, T.; Zherebtsov, S.; Kling, M. F.; Lépine, F.; Benedetti, E.; Ferrari, F.; Sansone, G.; Nisoli, M.
Journal Name Physical Review Letters
Year Published 2010
Place of publication United States
Publisher American Physical Society
Abstract We present an interferometric pump-probe technique for the characterization of attosecond electron wave packets (WPs) that uses a free WP as a reference to measure a bound WP. We demonstrate our method by exciting helium atoms using an attosecond pulse (AP) with a bandwidth centered near the ionization threshold, thus creating both a bound and a free WP simultaneously. After a variable delay, the bound WP is ionized by a few-cycle infrared laser precisely synchronized to the original AP. By measuring the delay-dependent photoelectron spectrum we obtain an interferogram that contains both quantum beats as well as multipath interference. Analysis of the interferogram allows us to determine the bound WP components with a spectral resolution much better than the inverse of the AP duration.
Peer Reviewed Yes
Published Yes
Alternative URI
Volume 105
Issue Number 5
Page from 053001-1
Page to 053001-4
ISSN 0031-9007
Date Accessioned 2012-01-12; 2012-02-16T05:28:17Z
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Atomic and Molecular Physics
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1x

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