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.

6 pages, 5 figures

References in corpus (6)

• Bright Coherent Ultrahigh Harmonics in the keV X-Ray Regime from Mid-Infrared Femtosecond Lasers
• Atomic harmonic generation in time-dependent R-matrix theory
• The influence of multiple ionization thresholds on harmonic generation: Ar+
• Population trapping in bound states during IR-assisted ultra-fast photoionization of Ne${}^{+}$
• Multichannel Interference In High-Order Harmonic Generation From Ne(+) Driven By Ultrashort Intense Laser Pulse
• Electron dynamics in the carbon atom induced by spin-orbit interaction

Cited by in corpus (8)

• 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
• Ellipticity Dependence of Excitation and Ionization of Argon Atoms by Short-Pulse Infrared Radiation
• Correlation enhancement of high-order harmonics generation in Xe
• Spin and spatial dynamics in electron-impact scattering off S-wave He using R-matrix with Time-Dependence theory