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Phys. Rev. A 65, 043410 (2002) [14 pages]

Spin and radiation in intense laser fields
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M. W. Walser *, D. J. Urbach †, K. Z. Hatsagortsyan ‡, S. X. Hu §, and C. H. Keitel **
Theoretische Quantendynamik, Fakultät für Physik, Universität Freiburg, Hermann-Herder-Straße 3, D-79104 Freiburg, Germany

Received 26 September 2001; published 4 April 2002

The spin dynamics and its reaction on the particle motion are investigated for free and bound electrons in intense linearly polarized laser fields. Employing both classical and quantum treatments we analytically evaluate the spin oscillation of free electrons in intense laser fields and indicate the effect of spin-orbit coupling on the motion of the electron. In Mott scattering an estimation for the spin oscillation is derived. In intense laser ion dynamics spin signatures are studied in detail with emphasis on high-order harmonic generation in the tunneling regime. First- and second-order calculations in the ratio of electron velocity and the speed of light show spin signatures in the radiation spectrum and spin-orbit effects in the electron polarization.


©2002 The American Physical Society

URL: http://link.aps.org/abstract/PRA/v65/e043410
DOI: 10.1103/PhysRevA.65.043410
PACS: 32.80.Rm, 42.50.Hz, 33.40.+f

* Present address: Institut für Photonik, Technische Universität Wien, Gusshausstrasse 27/387, A-1040 Wien, Austria.
† Electronic address: David.Urbach@gwf.admin.ch
‡ Permanent address: Department of Theoretical Physics, Yerevan State University, A. Manoukian Street 1, 375025 Yerevan, Armenia.
§ Present address: Department of Physics and Astronomy, University of Nebraska–Lincoln, Lincoln, NE 68588-0111.
** Electronic address: keitel@uni-freiburg.de

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