Electron correlation and interference effects in strong-field processes

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.

to be published in Springer Proceedings "Multiphoton Processes and Attosecond Physics"

References in corpus (7)

• Phase matching of high harmonic generation in the soft and hard X-ray regions of the spectrum
• Performance of networks of artificial neurons: The role of clustering
• Two-center resonant photo ionization
• High Harmonic Generation via Continuum Wave-Packet Interference
• High-order harmonic generation enhanced by XUV light
• Attochirp-free High-order Harmonic Generation
• Resonant two-photon single ionization of two atoms

Cited by in corpus (4)

• Neon in ultrashort and intense x rays from free electron lasers
• High-order harmonic generation with resonant core excitation by ultraintense x rays
• Attosecond dynamics of light-induced resonant hole transfer in high-order-harmonic generation
• Rate equations for nitrogen molecules in ultrashort and intense x-ray pulses