Europhys. Lett, 48 (8), pp. 533-539 (1999)
Influence of spin-laser interaction on relativistic harmonic generation
M. W. Walser, C. Szymanowski and C. H. Keitel
Theoretische Quantendynamik, Albert-Ludwigs Universität Freiburg
Hermann-Herder-Straße 3, D-79104 Freiburg im Breisgau, Germany
(received 20 August 1999; accepted 6 October 1999)
PACS. 42.65Ky - Harmonic generation, frequency conversion.
PACS. 03.50Kk - Other special classical field theories.
PACS. 52.65Cc - Particle orbit and trajectory.
The emission of harmonic radiation by an electron oscillating anharmonically in a linearly polarized plane ultra-intense laser field is studied. The electron is described as a classical relativistic particle with a magnetic moment in order to include the spin-laser interaction. In contrast to ordinary Maxwell dynamics the motion can become three-dimensional depending on the orientation of the spin. Additional harmonics are visible in the direction of the electric field of the laser where no harmonics of polarization along the magnetic-field direction are to be expected.
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