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Disentangling Spectral Phases of Interfering Autoionizing States from Attosecond Interferometric Measurements

Barreau, Lou ; Petersson, Leon LU ; Klinker, Markus ; Camper, Antoine ; Marante, Carlos ; Gorman, Timothy ; Kiesewetter, Dietrich ; Argenti, Luca ; Agostini, Pierre and Gonzales-Vazquez, Jesus , et al. (2019) In Physical Review Letters 122(25).
Abstract
We have determined spectral phases of Ne autoionizing states from extreme ultraviolet and midinfrared attosecond interferometric measurements and ab initio full-electron time-dependent theoretical calculations in an energy interval where several of these states are coherently populated. The retrieved phases exhibit a complex behavior as a function of photon energy, which is the consequence of the interference between paths involving various resonances. In spite of this complexity, we show that phases for individual resonances can still be obtained from experiment by using an extension of the Fano model of atomic resonances. As simultaneous excitation of several resonances is a common scenario in many-electron systems, the present work... (More)
We have determined spectral phases of Ne autoionizing states from extreme ultraviolet and midinfrared attosecond interferometric measurements and ab initio full-electron time-dependent theoretical calculations in an energy interval where several of these states are coherently populated. The retrieved phases exhibit a complex behavior as a function of photon energy, which is the consequence of the interference between paths involving various resonances. In spite of this complexity, we show that phases for individual resonances can still be obtained from experiment by using an extension of the Fano model of atomic resonances. As simultaneous excitation of several resonances is a common scenario in many-electron systems, the present work paves the way to reconstruct electron wave packets coherently generated by attosecond pulses in systems larger than helium. (Less)
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publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
122
issue
25
article number
253203
publisher
American Physical Society
external identifiers
  • scopus:85068615844
ISSN
0031-9007
DOI
10.1103/PhysRevLett.122.253203
language
English
LU publication?
no
id
71b3a7ec-38fd-4232-a49d-dcfb80480ca3
date added to LUP
2022-01-12 10:48:25
date last changed
2022-04-19 19:07:10
@article{71b3a7ec-38fd-4232-a49d-dcfb80480ca3,
  abstract     = {{We have determined spectral phases of Ne autoionizing states from extreme ultraviolet and midinfrared attosecond interferometric measurements and ab initio full-electron time-dependent theoretical calculations in an energy interval where several of these states are coherently populated. The retrieved phases exhibit a complex behavior as a function of photon energy, which is the consequence of the interference between paths involving various resonances. In spite of this complexity, we show that phases for individual resonances can still be obtained from experiment by using an extension of the Fano model of atomic resonances. As simultaneous excitation of several resonances is a common scenario in many-electron systems, the present work paves the way to reconstruct electron wave packets coherently generated by attosecond pulses in systems larger than helium.}},
  author       = {{Barreau, Lou and Petersson, Leon and Klinker, Markus and Camper, Antoine and Marante, Carlos and Gorman, Timothy and Kiesewetter, Dietrich and Argenti, Luca and Agostini, Pierre and Gonzales-Vazquez, Jesus and Sali`eres, Pascal and DiMauro, Louis}},
  issn         = {{0031-9007}},
  language     = {{eng}},
  number       = {{25}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Disentangling Spectral Phases of Interfering Autoionizing States from Attosecond Interferometric Measurements}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.122.253203}},
  doi          = {{10.1103/PhysRevLett.122.253203}},
  volume       = {{122}},
  year         = {{2019}},
}