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Alternative descriptions of the light-matter interaction beyond the dipole approximation
Stockholm University, Faculty of Science, Department of Physics.
2007 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 76, no 2, 23427- p.Article in journal (Refereed) Published
Abstract [en]

Different descriptions of the light-matter interaction which include the full spatial dependence of the electromagnetic field are presented. It is demonstrated how nondipole forms of both the Kramers-Henneberger and the length gauge Hamiltonians may be obtained from the minimum-coupling Hamiltonian in the velocity gauge through the Baker-Hausdorff lemma. Furthermore, the length gauge version of the Dirac equation is presented. The applicability of the different descriptions is discussed.

Place, publisher, year, edition, pages
2007. Vol. 76, no 2, 23427- p.
Keyword [en]
high-harmonic-generation, laser-pulses, intense, stabilization, breakdown, fields, atoms
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-55874DOI: 10.1103/PhysRevA.76.023427ISI: 000249154900110OAI: oai:DiVA.org:su-55874DiVA: diva2:407300
Note
authorCount :2Available from: 2011-03-30 Created: 2011-03-30 Last updated: 2017-12-11Bibliographically approved

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