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MO: Fachverband Molekülphysik

MO 1: Attosecond Science I (joint session A/MO)

MO 1.2: Hauptvortrag

Montag, 5. März 2018, 11:00–11:30, K 1.011

Molecular Orbital Imprint in Laser-Driven Electron Recollision — Felix Schell, Timm Bredtmann, Claus Peter Schulz, Serguei Patchkovskii, Marc Vrakking, and •Jochen Mikosch — Max-Born-Institute, Max-Born-Strasse 2A, 12489 Berlin

Electrons released by strong-field ionization from atoms, molecules, or in solids can be accelerated in the oscillating laser field and driven back to their ion core. The ensuing interaction, phase-locked to the optical cycle, initiates the central processes underlying attosecond science. A key long-standing assumption regards the returning electron wavepacket as a plane wave. Here we study laser-induced electron rescattering associated with two different ionization continua in the same, spatially aligned, polyatomic molecule [1]. We show by experiment and theory that the electron return probability is in fact molecular-frame dependent and carries structural information on the ionized orbital. Pronounced deviations of the returning wavepacket from plane-wave character have to be accounted for in analyzing attosecond experiments based on strong laser fields.

[1] F. Schell, T. Bredtmann, C.P. Schulz, S. Patchkovskii, M.J.J. Vrakking, and J. Mikosch (submitted)