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

Journal Article · Tue Dec 01 04:00:00 EST 1992 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.46.7322· OSTI ID:7198546

Jiang, T ^[1]; Chu, S ^[2]

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1. Department of Electrophysics, Chiao Tung University, Hsinchu, Taiwan (Taiwan, Province of China)
2. Department of Chemistry, University of Kansas, Lawrence, Kansas 66045 (United States)

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.

• OSTI ID: 7198546
• Journal Information: Physical Review A. General Physics; (United States), Journal Name: Physical Review A. General Physics; (United States) Vol. 46:11; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

664200* -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ACCELERATION
ATOMS
DIPOLE MOMENTS
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION SPECTRA
FOURIER TRANSFORMATION
FREQUENCY MIXING
FUNCTIONS
HARMONIC GENERATION
HYDROGEN
INTEGRAL TRANSFORMATIONS
LASERS
NONMETALS
RADIATIONS
SPECTRA
TIME DEPENDENCE
TRANSFORMATIONS
ULTRAVIOLET RADIATION
WAVE FUNCTIONS