101. Electron correlation and interference effects in strong-field processes
- Author
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Kohler, Markus C., Müller, Carsten, Buth, Christian, Voitkiv, Alexander B., Hatsagortsyan, Karen Z., Ullrich, Joachim, Pfeifer, Thomas, and Keitel, Christoph H.
- Subjects
Physics - Atomic Physics ,Physics - Optics - Abstract
Several correlation and interference effects in strong-field physics are investigated. We show that the interference of continuum wave packets can be the dominant mechanism of high-harmonic generation (HHG) in the over-the-barrier regime. Next, we combine HHG with resonant x-ray excitation to force the recolliding continuum electron to recombine with a core hole rather than the valence hole from that it was previously tunnel ionized. The scheme opens up perspectives for nonlinear xuv physics, attosecond x-ray pulses, and spectroscopy of core orbitals. Then, a method is proposed to generate attochirp-free harmonic pulses by engineering the appropriate electron wave packet. Finally, resonant photoionization mechanisms involving two atoms are discussed which can dominate over the direct single-atom ionization channel at interatomic distances in the nanometer range., Comment: to be published in Springer Proceedings "Multiphoton Processes and Attosecond Physics"
- Published
- 2011
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