Journal of Physics B Atomic and Molecular Physics

Kinematics of multiphoton ionisation in a laser pulse

Emilio Fiordilino, Marvin H. Mittleman

Published Nov 28, 1985• 24 citations

Abstract

Previous results for the shift of the ionisation potential of an atom in a laser field are used to investigate the kinematics of multiphoton ionisation in either a laser beam or a laser pulse. Previous results for a laser beam show essentially no shifts of the 'above-threshold ionisation' peaks in the electron energy distribution and only small widths. Results for a laser pulse show the possibility of large shifts and widths growing as the pulse becomes shorter. Electrons which absorb a larger number of photons are predicted to show less shifted and narrower peaks.

DOI: 10.1088/0022-3700/18/22/011

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