Entropic measure of wave-packet spreading and ionization in laser-driven atoms
- Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX13PU (United Kingdom)
We consider wave-packet spreading and ionization of a one-dimensional model hydrogen atom interacting with a strong high-frequency laser field in the stabilization domain. We demonstrate the effect of the pulse shape on the dynamics in phase space and visualize our results with both the Wigner and the {ital Q} function phase-space quasiprobability representation. The Wehrl entropy is introduced and utilized as a convenient one-parameter measure of wave-packet spreading, phase-space localization, and ionization. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 285946
- Journal Information:
- Physical Review A, Journal Name: Physical Review A Journal Issue: 1 Vol. 54; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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