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.
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.
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.
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.
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.
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.
