Attosecond Electron Spectroscopy Using a Novel Interferometric Pump-Probe Technique
Author(s)
Mauritsson, J.
Remetter, T.
Swoboda, M.
Klunder, K.
L'Huiller, A.
Schafer, K.
Ghafur, O.
Kelkensberg, F
Siu, W.
Johnsson, P.
J Vrakking, M.
Znakovskaya, I.
Uphues, T.
Zherebtsov, S.
Kling, M.
Lépine, F.
Benedetti, E.
Ferrari, F.
Sansone, G.
Nisoli, M.
Griffith University Author(s)
Year published
2010
Metadata
Show full item recordAbstract
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 ...
View more >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.
View less >
View more >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.
View less >
Journal Title
Physical Review Letters
Volume
105
Issue
5
Subject
Atomic and Molecular Physics
Mathematical Sciences
Physical Sciences
Engineering