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

Journal Article · · Bulletin of the American Physical Society
OSTI ID:281472
We present a study of the high-order harmonic-generation (KG) 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:
281472
Report Number(s):
CONF-9305421--
Journal Information:
Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 38; ISSN BAPSA6; ISSN 0003-0503
Country of Publication:
United States
Language:
English

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