Observation of electronic structure minima in high-harmonic generation

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DOIResolve DOI: http://doi.org/10.1103/PhysRevLett.102.103901
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TypeArticle
Journal titlePhysical Review Letters
Volume102
Issue10
Pages103901-1103901-4; # of pages: 4
AbstractWe report detailed measurements of the high-harmonic spectra generated from argon atoms. The spectra exhibit a deep minimum that is shown to be independent of the laser intensity, and is thus a clear measure of the electronic structure of the atom. We show that exact field-free continuum wave functions reproduce the minimum, but plane wave and Coulomb wave functions do not. This remarkable observation suggests that electronic structure can be accurately determined in high-harmonic experiments despite the presence of the strong laser field. Our results clarify the relation between high-harmonic generation and photoelectron spectroscopy. The use of exact continuum functions also resolves the ambiguity associated with the choice of the dispersion relation.
Publication date
LanguageEnglish
AffiliationNRC Steacie Institute for Molecular Sciences; National Research Council Canada
Peer reviewedYes
NPARC number15192484
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Record identifierc000e8e8-9ce7-4687-8fd9-e9955e7184a3
Record created2010-07-12
Record modified2016-05-09
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