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arXiv · 1410.4015

Harmonic generation of noble-gas atoms in the Near-IR regime using ab-initio time-dependent R-matrix theory

O. Hassouneh·A. C. Brown·H. W. van der Hart
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Abstract

We demonstrate the capability of ab-initio time-dependent R-matrix theory to obtain accurate harmonic generation spectra of noble-gas atoms at Near-IR wavelengths between 1200 and 1800 nm and peak intensities up to 1.8 X 10(14) W/cm(2) . To accommodate the excursion length of the ejected electron, we use an angular-momentum expansion up to Lmax = 279. The harmonic spectra show evidence of atomic structure through the presence of a Cooper minimum in harmonic generation for Kr, and of multielectron interaction through the giant resonance for Xe. The theoretical spectra agree well with those obtained experimentally.

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O. Hassouneh, A. C. Brown, H. W. van der Hart. 2014-10-15. Harmonic generation of noble-gas atoms in the Near-IR regime using ab-initio time-dependent R-matrix theory. https://doi.org/10.1103/physreva.90.043418

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