Interference of electron wave packets in photoionization of by attosecond ultraviolet laser pulses

We study molecular photoionization of aligned by a sequence of two attosecond ultraviolet laser pulses at frequencies and from numerical solutions of time-dependent Schördinger equations. Results exhibit signature of interference effects of coherent electron wave packets, which is shown to be sensit...

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Bibliographic Details
Published inJournal of modern optics Vol. 64; no. 14; pp. 1411 - 1418
Main Authors Yu, Hua-Ming, Yuan, Kai-Jun
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 06.08.2017
Taylor & Francis Ltd
Subjects
carrier envelope phase
Electron interference
Interference
Lasers
Perturbation methods
Perturbation theory
photoelectron momentum distribution
Photoionization
Time lag
two-colour ultraviolet pulse
Ultraviolet
Wave packets
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Summary:We study molecular photoionization of aligned by a sequence of two attosecond ultraviolet laser pulses at frequencies and from numerical solutions of time-dependent Schördinger equations. Results exhibit signature of interference effects of coherent electron wave packets, which is shown to be sensitive to the time delay between the two pulses. It is found that for the photoionization with identical frequencies , same interference distributions are produced in the positive and negative momentum regions whereas for the case of , photoelectron momentum distributions are asymmetric. Influence of the pulse carrier envelope phase is also presented. The attosecond perturbation theory is used to describe these interference phenomena.
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content type line 14
ISSN:0950-0340
1362-3044
DOI:10.1080/09500340.2017.1291862