High-order harmonic generation in atomic hydrogen at 248 nm: Dipole-moment versus acceleration spectrum

Tsin-Fu Jiang*, Shih I. Chu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

65 Scopus citations

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.

Original languageEnglish
Pages (from-to)7322-7324
Number of pages3
JournalPhysical Review A
Volume46
Issue number11
DOIs
StatePublished - 1 Jan 1992

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