Interference in strong-field ionization of a two-centre atomic system

Abstract

Strong-field photoionization of argon dimers by a few-cycle laser pulse is investigated using electron–ion coincidence momentum spectroscopy. The momentum distribution of the photoelectrons exhibits interference due to the emission from the two atomic argon centres, in analogy with a Young's double-slit experiment. However, a simulation of the dimer photoelectron momentum spectrum based on the atomic spectrum supplemented with a theoretically derived interference term leads to distinct deviations from the experimental result. The deviations may have their origin in a complex electron dynamics during strong-field ionization of the Ar2 dimer.

Keywords

Affiliated Institutions

• University of Sarajevo BA
• Humboldt-Universität zu Berlin DE
• Friedrich Schiller University Jena DE
• Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy DE
• Max Planck Institute of Quantum Optics DE

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