Electron Dynamics and Correlations During High-Order Harmonic Generation in Be

Kutscher, Eric; Artemyev, A. N.; Demekhin, Ph. V.

doi:10.3389/fchem.2022.809137

Cited by 3 publications

(1 citation statement)

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“…However, such effects have been shown to significantly change the harmonic cutoff and/or the intensity of the generated harmonics through phenomena such as the giant resonance in xenon [17]. Multielectron effects on the production of HHG were reported in a variety of studies over the years [18][19][20][21][22], including recent works on He [23] and Be [24].…”

Section: Introductionmentioning

confidence: 99%

High-order harmonic generation in the water window from mid-IR laser sources

et al. 2022

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We investigate the harmonic response of neon atoms to mid-IR laser fields (2000 − 3000 nm) using a single-active electron (SAE) model and the fully ab initio all-electron R-Matrix with Timedependence (RMT) method. The laser peak intensity and wavelength are varied to find suitable parameters for high-harmonic imaging in the water window. Comparison of the SAE and RMT results shows qualitative agreement between them as well as parameters such as the cutoff frequency predicted by the classical three-step model. However, there are significant differences in the details, particularly in the predicted conversion efficiency. These details indicate the possible importance of multi-electron effects, as well as a strong sensitivity of quantitative predictions on specific aspects of the numerical model.

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Section: Introductionmentioning

confidence: 99%

High-order harmonic generation in the water window from mid-IR laser sources

et al. 2022

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Theoretical study of spin polarization in multiphoton ionization of Xe

Artemyev

Kutscher

Lagutin

et al. 2023

The Journal of Chemical Physics

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Spin polarization in the multiphoton above-threshold ionization of 5p3/2- and 5p1/2-electrons of Xe with intense 395nm, circularly polarized laser pulses, is investigated theoretically. For this purpose, we solve the time-dependent Schrödinger equation on the basis of spherical spinors. We, thus, simultaneously propagate the spin-up and spin-down single-active-electron wave packets, driven by the laser pulses in the ionic potential, which includes the spin–orbit interaction explicitly. The present theoretical results are in good agreement with the recent experimental results [D. Trabert et al., Phys. Rev. Lett. 120, 043202 (2018)].

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