Complete photoionization experiments via ultrafast coherent control with polarization multiplexing

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DOIResolve DOI: http://doi.org/10.1103/PhysRevLett.112.223001
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TypeArticle
Journal titlePhysical Review Letters
ISSN0031-9007
Volume112
Issue22
Article number223001
Pages15; # of pages: 5
SubjectExperiments; Photons; Polarization; Coherent control; Electronic dynamics; Ionization matrices; Photoelectron angular distributions; Polarization multiplexing; Polarization state; Theoretical treatments; Three photon absorption; Photoionization
AbstractPhotoelectron angular distributions (PADs) obtained from ionization of potassium atoms using moderately intense femtosecond IR fields (∼1012  W cm−2) of various polarization states are shown to provide a route to “complete” photoionization experiments. Ionization occurs by a net three-photon absorption process, driven via the 4s→4p resonance at the one-photon level. A theoretical treatment incorporating the intrapulse electronic dynamics allows for a full set of ionization matrix elements to be extracted from 2D imaging data. 3D PADs generated from the extracted matrix elements are also compared to experimental, tomographically reconstructed, 3D photoelectron distributions, providing a sensitive test of their validity. Finally, application of the determined matrix elements to ionization via more complex, polarization-shaped, pulses is demonstrated, illustrating the utility of this methodology towards detailed understanding of complex ionization control schemes and suggesting the utility of such “multiplexed” intrapulse processes as powerful tools for measurement.
Publication date
LanguageEnglish
AffiliationSecurity and Disruptive Technologies; National Research Council Canada
Peer reviewedYes
NPARC number21272941
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Record identifierc525d99f-5d59-46d3-b27f-dc06e1a3caf8
Record created2014-12-03
Record modified2016-05-09
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