Short-pulse model-atom studies of ionization in intense laser fields
- 28 April 1994
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 27 (8) , 1497-1514
- https://doi.org/10.1088/0953-4075/27/8/011
Abstract
We study the evolution of ionization probability in a simple one-dimensional model atom with a delta-function potential for very short, intense laser pulses. The intensities are in the ranges where tunnelling and over-the-barrier ionization take place. A full numerical solution For the time-dependent Schrodinger equation is obtained and a detailed comparison is made between the results for rectangular and smooth pulses. The ultra-intense field limit is verified to follow the ionization expected from an oscillating Volkov wavepacket which is uniformly spreading. No signs of ionization suppression or bound state stabilization are seen.Keywords
This publication has 18 references indexed in Scilit:
- Excitation and ionization of hydrogen atoms by ultra-intense fieldsJournal of Physics B: Atomic, Molecular and Optical Physics, 1994
- Numerical study of the one-dimensional hydrogen atom in an external time-dependent electric fieldPhysical Review A, 1993
- Atoms in ultra-intense laser fieldsJournal of Physics B: Atomic, Molecular and Optical Physics, 1993
- Volkov limit for atomic ionization by ultraintense laser fieldsPhysical Review A, 1992
- Supression of ionization in strong laser fieldsPhysical Review Letters, 1991
- Ionization of atoms in intense laser pulses using the Kramers-Henneberger transformationPhysical Review A, 1990
- Structures in the excitation function ofONeNe and a nonresonant description of these structuresPhysical Review C, 1989
- Convergence of High-Intensity Expansions for Atomic IonizationPhysical Review Letters, 1984
- Ionisation of model atoms by intense electromagnetic fieldsJournal of Physics B: Atomic and Molecular Physics, 1979
- Ionization of a model atom by a pulse of coherent radiationJournal of Physics B: Atomic and Molecular Physics, 1977