Separation of target structure and medium propagation effects in high-harmonic generation

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DOIResolve DOI: http://doi.org/10.1088/0953-4075/44/9/095601
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TypeArticle
Journal titleJournal of Physics B : Atomic, Molecular and Optical Physics
Volume44
Issue9
Pages095601
AbstractWe calculate high-harmonic generation (HHG) by intense infrared lasers in atoms and molecules with the inclusion of macroscopic propagation of the harmonics in the gas medium. We show that the observed experimental spectra can be accurately reproduced theoretically despite the sensitivities of the HHG spectra to the experimental conditions. We further demonstrate that the simulated (or experimental) HHG spectra can be factored out as a product of a 'macroscopic wave packet' and the photo-recombination transition dipole moment where the former depends on the laser properties and the experimental conditions, while the latter is the property of the target only. The factorization makes it possible to extract target structure from experimental HHG spectra, and for ultrafast dynamic imaging of transient molecules.
Publication date
LanguageEnglish
AffiliationNRC Steacie Institute for Molecular Sciences; National Research Council Canada
Peer reviewedYes
NPARC number19588988
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Record identifiera3ba8b75-1e44-41cd-a1d9-e92caa63baa9
Record created2012-03-07
Record modified2016-05-09
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