7th International Conference on Attosecond Science and Technology

Session

New approaches for measuring atomic and molecular dynamics

4 Jul 2019, 16:15

University of Szeged Congress Centre

252. Attosecond Photoionization Dynamics in Pathological Cases

Pascal Salieres (CEA, CNRS, Université Paris-Saclay)

04/07/2019, 16:15

invited talks

I will review our recent studies on attosecond photoionization dynamics in complex cases where, e.g., multiple resonances are simultaneously excited, spin-orbit components overlap, Cooper minima are transferred by intershell correlation, or decoherence comes into play.

157. Imaging The Renner-Teller Effect Using Laser-Induced Electron Diffraction

Dr Kasra Amini (ICFO)

04/07/2019, 16:45

oral

We employ laser-induced electron diffraction (LIED) coupled with state-of-the-art quantum dynamical calculations to reveal a linear-to-bent transition that is enabled by the Renner-Teller effect in field-dressed molecules investigated with a single-pulse pump-probe excitation and measurement.

270. Sub-femtosecond Timing Tool for Experiments with a Seeded Free Electron Laser

Praveen Kumar Maroju (University of Freiburg)

04/07/2019, 17:00

oral

We present a novel approach to determine the relative delay jitter between a train of attosecond pulses and an infrared field with sub-femtosecond resolution, enabling pump-probe experiments on the attosecond timescale using seeded free electron lasers.

200. Opto-Optical Modulation (OOM) to Probe Stark Induced Phase Changes

Dr Emma R. Simpson (Lund University)

04/07/2019, 17:15

oral

Imparting control over extreme ultraviolet frequency light is challenging. Opto-optical modulation provides a means to both spatio-temporally control these frequencies, and probe Stark-induced phase changes, driving towards experimentally measured reconstruction of unknown nonlinear Stark-shifts.

155. Mapping a Molecular Shape Resonance During a Molecular Transformation

Dr Arnaud Rouzée (Max-Born-Institut)

04/07/2019, 17:30

oral

We investigate the strong field ionization of photoexcited I$_2$ molecules by 1.3 $\mu$m laser pulses. When the molecule is stretched, we observe a large modification of the laser-assisted electron scattering cross-section that we assign to the evolution of a molecular shape resonance.

112. Nature and Coherence of the Molecular-ion Electronic State Prepared by Attosecond Ionization

Dr Marco Ruberti (Imperial College London)

04/07/2019, 17:45

oral

Here we elucidate the nature of the initial state for the hole-migration dynamics following ultra-fast ionization in the molecular ion, by quantitatively predicting its electronic coherence and eigenstates content.