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arXiv · 1111.3555

Electron correlation and interference effects in strong-field processes

Markus C. Kohler·Carsten Müller·Christian Buth·Alexander B. Voitkiv·Karen Z. Hatsagortsyan·Joachim Ullrich·Thomas Pfeifer·Christoph H. Keitel
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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.

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Markus C. Kohler, Carsten Müller, Christian Buth, Alexander B. Voitkiv, Karen Z. Hatsagortsyan, Joachim Ullrich, Thomas Pfeifer, Christoph H. Keitel. 2011-11-15. Electron correlation and interference effects in strong-field processes. https://doi.org/10.1007/978-3-642-28948-4_35

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