Electron localization following attosecond molecular photoionization

G. Sansone, F. Kelkensberg, J. F. Pérez-Torres, F. Morales, M. F. Kling, W. Siu, O. Ghafur, P. Johnsson, M. Swoboda, E. Benedetti, F. Ferrari, F. Lépine, J. L. Sanz-Vicario, S. Zherebtsov, I. Znakovskaya, A. L’Huillier, M. Yu. Ivanov, M. Nisoli, F. Martín and M. J. J. Vrakking ()
Additional contact information
G. Sansone: CNR-INFM, National Laboratory for Ultrafast and Ultraintense Optical Science, Politecnico of Milan, Piazza L. da Vinci 32, 20133 Milano, Italy
F. Kelkensberg: FOM-Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
J. F. Pérez-Torres: C-9, Universidad Autónoma de Madrid
F. Morales: C-9, Universidad Autónoma de Madrid
M. F. Kling: Max-Planck Institut für Quantenoptik, Hans-Kopfermann Strasse 1, D-85748 Garching, Germany
W. Siu: FOM-Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
O. Ghafur: FOM-Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
P. Johnsson: FOM-Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
M. Swoboda: Lund University, PO Box 118, SE-221 00 Lund, Sweden
E. Benedetti: CNR-INFM, National Laboratory for Ultrafast and Ultraintense Optical Science, Politecnico of Milan, Piazza L. da Vinci 32, 20133 Milano, Italy
F. Ferrari: CNR-INFM, National Laboratory for Ultrafast and Ultraintense Optical Science, Politecnico of Milan, Piazza L. da Vinci 32, 20133 Milano, Italy
F. Lépine: Université Lyon 1/CNRS/LASIM, UMR 5579, 43 Boulevard Du 11 Novembre 1918, F-69622 Villeurbane, France
J. L. Sanz-Vicario: Grupo de Física Atómica y Molecular, Instituto de Física, Universidad de Antioquia
S. Zherebtsov: Max-Planck Institut für Quantenoptik, Hans-Kopfermann Strasse 1, D-85748 Garching, Germany
I. Znakovskaya: Max-Planck Institut für Quantenoptik, Hans-Kopfermann Strasse 1, D-85748 Garching, Germany
A. L’Huillier: Lund University, PO Box 118, SE-221 00 Lund, Sweden
M. Yu. Ivanov: Imperial College London, South Kensington Campus, SW7 2AZ, London, UK
M. Nisoli: CNR-INFM, National Laboratory for Ultrafast and Ultraintense Optical Science, Politecnico of Milan, Piazza L. da Vinci 32, 20133 Milano, Italy
F. Martín: C-9, Universidad Autónoma de Madrid
M. J. J. Vrakking: FOM-Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands

Nature, 2010, vol. 465, issue 7299, 763-766

Abstract: Attosecond-scale electron localization The primary event in photoexcitation — involved in processes such as photosynthesis and photoisomerization — is an electronic response that occurs on attosecond (1 as = 10−18 s) timescales, a realm recently made accessible to spectroscopic investigation by the development of attosecond-scale light pulses. Sansone et al. report an experimental study in which electron localization in molecules is measured on attosecond timescales using pump–probe spectroscopy. H2 and D2 are dissociatively ionized by the sequence of an isolated attosecond ultraviolet pulse and an intense few-cycle infrared pulse, and a localization of the electronic charge distribution within the molecule is measured that depends on the delay between the pump and probe pulses. This work demonstrates that combined experimental and computational efforts enable the use of attosecond pulses for the exploration of electron localization.

Date: 2010
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DOI: 10.1038/nature09084

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