Improved one-dimensional model potentials for strong-field simulations

Abstract

Based on a plausible requirement for the ground state density, we introduce a novel one-dimensional (1D) atomic model potential for the 1D simulation of the quantum dynamics of a single active electron atom driven by a strong, linearly polarized few-cycle laser pulse. The form of this density-based 1D model potential also suggests improved parameters for other well-known 1D model potentials. We test these 1D model potentials in numerical simulations of typical strong-field physics scenarios and we find an impressively increased accuracy of the low-frequency features of the most important physical quantities. The structure and the phase of the high-order harmonic spectra also have a very good match to those resulting from the three-dimensional simulations, which enables to fit the corresponding power spectra with the help of a simple scaling function.

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• Density-based one-dimensional model potentials for strong-field simulations in $\text{He}$, ${\text{H}}_2^{+}$ and ${\text{H}}_2$
• Strong-field ionization of atoms with $p^3$ valence shell: Two versus three active electrons
• One-dimensional model potentials optimized for the calculation of the HHG spectrum
• Attoscience in Phase Space
• Spectral Phase Effects in High-Order Above Threshold Ionization of Noble Gas Atoms
• Universality in odd-even harmonic generation and application in terahertz waveform sampling
• Analytically controlling laser-induced electron phase in sub-cycle motion
• Diatomic molecule in a strong infrared laser field: level-shifts and bond-length change due to laser-dressed Morse potential
• Controlling quantum effects in enhanced strong-field ionisation with machine-learning techniques
• Classical versus quantum views of intense laser pulse propagation in gases
• Quantum versus semi-classical signatures of correlated triple ionization in Dalitz plots
• Control of the classical dynamics of a particle in the Morse-soft-Coulomb potential
• Detailed study of quantum path interferences in high harmonic generation driven by chirped laser pulses