7th International Conference on Attosecond Science and Technology

Session

High-harmonic spectroscopy of molecular processes

3 Jul 2019, 14:00

University of Szeged Congress Centre

315. Ultrafast Phenomena in Bio-Relevant Molecules Promoted by Attosecond Excitation

Mauro Nisoli (Politecnico di Milano)

03/07/2019, 14:00

invited talks

Extreme-ultraviolet attosecond pulses are ideal tools for the investigation of ultrafast processes initiated by ionizing radiation in biologically-relevant structures on various timescales, ranging from the attosecond to the few-femtosecond domain.

158. Unfolding the Physics of Shape Resonances in the Photoionization of N$_{2}$O

Prof. Hans Jacob Wörner (ETH Zürich)

03/07/2019, 14:30

oral

We experimentally resolve the complex, angle-dependent attosecond photoionization dynamics in the presence of a molecular shape resonance (SR) in N$_{2}$O, theoretically supported using quantum scattering methods.

25. Visualizing Molecular Unidirectional Rotation with High-harmonic Generation

Prof. Pengfei Lan (Huazhong University of Science and Technology)

03/07/2019, 14:45

oral

An angle-resolved high-harmonic spectroscopy is demonstrated to probe the molecular unidirectional rotation. The rotational dynamics is directly visualized from the time-delay-dependent angular distributions and frequency shift of the generated harmonics.

49. Ultrafast Ring-Opening Dynamics of 1,3-Cyclohexadiene Probed via Time-Resolved High-Harmonic Spectroscopy

Keisuke Kaneshima (Hokkaido University)

03/07/2019, 15:00

oral

We demonstrate the simultaneous observation of the electronic and vibrational dynamics of the photo-isomerizing 1,3-cyclohexadiene via time-resolved high-harmonic spectroscopy. The observed attosecond high-harmonic interference reveals how the excited-state ionization potential evolves along the reaction coordinate.

152. Electron Correlation Driven Non-adiabatic Relaxation in 2D Molecular Structures Following Excitation by an Ultrashort XUV Pulse

Marius Herve (ILM (Lyon))

03/07/2019, 15:15

oral

We used time-resolved XUV-IR photoelectron spectroscopy to probe the ultrafast dynamics in highly excited large carbon based molecules. Our results show evidences of manybody driven relaxation and electro-nuclear coherences. Analogies with the behaviour of 2D materials will be presented.

144. Real-Time Imaging of Ultrafast Charge Dynamics in CF$_{4}$ Molecule from Attosecond Pump-Probe Photoelectron Spectroscopy

Dr Etienne Plesiat (Universidad Autónoma de Madrid)

03/07/2019, 15:30

oral

Attosecond spectroscopy offers the possibility to track and control electron dynamics in molecules. We are reporting here a theoretical description of an attosecond pump-probe experiment on CF$_{4}$ showing clear evidences of a complex dynamics due to ultrafast charge fluctuations.