Phase-resolved two-dimensional spectroscopy of electronic wave packets by laser-induced XUV free induction decay

S. Beaulieu 1, 2 E. Bloch 1 L. Barreau 3, 4 A. Comby 1 D. Descamps 1 R. Géneaux 3, 4 F. Légaré 2 S. Petit 1 Y. Mairesse 1
1 CELIA - Centre d'Etudes Lasers Intenses et Applications
2 INRS - Institut National de la Recherche Scientifique [Québec]
3 ATTO - Attophysique
IRAMIS - Institut Rayonnement Matière de Saclay, LIDyl - Laboratoire Interactions, Dynamique et Lasers (ex SPAM)
4 LIDyl - Laboratoire Interactions, Dynamique et Lasers (ex SPAM)
Abstract : We present a time- and phase-resolved, background-free scheme to study the extreme ultraviolet dipole emission of a bound electronic wave packet, without the use of any extreme ultraviolet exciting pulse. Using multiphoton transitions, we populate a superposition of quantum states which coherently emit extreme ultraviolet radiation through free induction decay. This emission is probed and controlled, both in amplitude and phase, by a time-delayed infrared femtosecond pulse. We directly measure the laser-induced dephasing of the emission by using a simple heterodyne detection scheme based on two-source interferometry. This technique provides rich information about the interplay between the laser field and the Coulombic potential on the excited electron dynamics. Its background-free nature enables us to use a large range of gas pressures and to reveal the influence of collisions in the relaxation process.
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Article dans une revue
Physical Review A, American Physical Society, 2017, 95, pp.041401. 〈10.1103/PhysRevA.95.041401〉
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https://hal-cea.archives-ouvertes.fr/cea-01506825
Contributeur : Caroline Lebe <>
Soumis le : mercredi 12 avril 2017 - 11:50:36
Dernière modification le : jeudi 7 février 2019 - 14:54:52

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CEA | CELIA | DSM-IRAMIS | IRAMIS-LIDYL | UNIV-PARIS-SACLAY | CEA-DRF | CEA-UPSAY | DAM

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S. Beaulieu, E. Bloch, L. Barreau, A. Comby, D. Descamps, et al.. Phase-resolved two-dimensional spectroscopy of electronic wave packets by laser-induced XUV free induction decay. Physical Review A, American Physical Society, 2017, 95, pp.041401. 〈10.1103/PhysRevA.95.041401〉. 〈cea-01506825〉

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