High-order harmonic generation in atomic hydrogen at 248 nm: Dipole-moment versus acceleration spectrum
Journal
Physical Review A
Journal Volume
46
Journal Issue
11
Pages
7322-7324
Date Issued
1992
Author(s)
Abstract
We present a study of the high-order harmonic-generation (HG) spectra of atomic hydrogen at 248 nm based on the Fourier transform of the expectation values of the induced dipole moment and acceleration. The calculations were performed by extending a fast-Fourier-transformation split-operator technique (in spherical coordinates) to the solution of the time-dependent wave functions in intense laser fields. It is seen that the acceleration form provides a more satisfactory and accurate framework for the study of the photoemission HG spectrum at very intense fields, particularly when ionization becomes appreciable.
SDGs
Type
journal article