Hannover 2016 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 8: Atomic systems in external fields II
A 8.1: Vortrag
Montag, 29. Februar 2016, 14:30–14:45, f303
Strong-field photoionization of H2+ at mid-infrared wavelength — •Max Möller1,2, Philipp Wustelt1,2, A. Max Sayler1,2, Stefanie Gräfe3, and Gerhard G. Paulus1,2 — 1Institute of Optics and Quantum Electronics and Abbe Center of Photonics, Friedrich Schiller University, Max-Wien-Platz 1, D-07743 Jena, Germany — 2Helmholtz Institute Jena, Fröbelstieg 3, D-07743 Jena — 3Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-University Jena, Helmholtzweg 4, D-07743 Jena, Germany
Increasing the driving laser wavelength into a region above 1 μm has lead to a number of interesting phenomena and applications in the field strong-field interactions of atoms. Examples are the discovery of low-energy structures or the generation or high harmonics with photon energies above 1 keV. Due to the nuclear degree of freedom, strong-field photoionization of small molecules induces more complex dynamics such as charge-resonant enhanced ionization, or laser-induced electron diffraction. Here, the fragmentation of an ion beam by a strong mid-infrared laser field is studied experimentally as a function of intensity. Three-dimensional coincidence imaging in combination with a well collimated ion beam and high pondermotive potential of the laser allows to perform a kinematically complete experiment. The experimental results are compared to solutions of the time-dependent Schrödinger equation in one and two dimensions.