High harmonic generation and the role of atomic orbital wave functions

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DOIResolve DOI: http://doi.org/10.1103/PhysRevLett.98.183903
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TypeArticle
Journal titlePhysical Review Letters
ISSN0031-9007
Volume98
Issue18
Article number183903
SubjectIonization; Kinetic energy; Spectrum analysis; Wave functions; Wave packets; Wavelength; de Broglie wavelength; Tunnel ionization; Velocity gauge; Harmonic generation
AbstractHigh harmonic spectra were recorded from different rare-gas atoms under identical experimental conditions. It is shown that although each atom's spectrum is different, the differences are due almost entirely to the orbital influence in the recombination step. The amplitude of the continuum electron wave packet versus kinetic energy is derived from these data and is shown to be largely independent of the atom, in agreement with models of tunnel ionization. We compare the measurements with calculations in both the length gauge and the velocity gauge and show that the two gauges imply a different de Broglie wavelength.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada
Peer reviewedYes
NPARC number21276203
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Record identifierbde95088-59f4-4ee7-b795-c7f94e45e215
Record created2015-09-28
Record modified2016-05-09
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