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

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.

arXiv comment6 pages, 5 figures

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Cited by in corpus (13)

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• $R$-matrix with Time-dependence Theory for Ultrafast Atomic Processes in Arbitrary Light Fields
• XUV-initiated high harmonic generation: driving inner valence electrons using below-threshold-energy XUV light
• Electron rescattering in strong-field photodetachment of F${}^{-}$
• Pulse-shape control of two-color interference in high-order-harmonic generation
• Modeling tomographic measurements of photoelectron vortices in counter-rotating circularly polarized laser pulses
• Electron rotational asymmetry in strong-field photodetachment from F${}^{-}$ by circularly polarized laser pulses
• On the Cooper Minimum in Singly ionized and Neutral Argon
• Ellipticity Dependence of Excitation and Ionization of Argon Atoms by Short-Pulse Infrared Radiation
• Correlation enhancement of high-order harmonics generation in Xe
• High-Harmonic Generation in the Water Window from mid-IR Laser Sources
• Spin and spatial dynamics in electron-impact scattering off S-wave He using R-matrix with Time-Dependence theory
• Multiphoton inner-shell ionization of the carbon atom