107 citations · 372 across the 16 of their papers we have counts for
17 papers
Dichroic Electron Emission Patterns from Oriented Helium Ions
Niclas Wieland, Klaus Bartschat, Filippa Dudda +17
We report a joint experimental and theoretical study using a combination of polarization-controlled free-electron-laser (FEL) and near-infra\-red (NIR) pulses in a synchronized two…
Ultrafast dynamics of vibronically dressed core-excitons in graphite: a femtosecond RIXS perspective
Marco Malvestuto, Beatrice Volpato, Elena Babici +16
This study demonstrates one of the first implementations of time-resolved resonant inelastic X-ray scattering (tr-RIXS), marking a seminal extension of RIXS spectroscopy into the u…
Circular Dichroism in Multiphoton Ionization of Resonantly Excited Helium Ions near Channel Closing
Rene Wagner, Markus Ilchen, Nicolas Douguet +16
The circular dichroism (CD) of photoelectrons generated by near-infrared (NIR) laser pulses using multiphoton ionization of excited He ions in the 3p(m=+1) state. The ions were…
Strong-field quantum control in the extreme ultraviolet using pulse shaping
Fabian Richter, Ulf Saalmann, Enrico Allaria +40
Tailored light-matter interactions in the strong coupling regime enable the manipulation and control of quantum systems with up to unit efficiency, with applications ranging from q…
Generation of entanglement using a short-wavelength seeded free-electron laser
Saikat Nandi, Axel Stenquist, Asimina Papoulia +25
Quantum entanglement between the degrees of freedom encountered in the classical world is challenging to observe due to the surrounding environment. To elucidate this issue, we inv…
High-resolution ptychographic imaging at a seeded free-electron laser source using OAM beams
M. Pancaldi, F. Guzzi, C. S. Bevis +21
Electromagnetic waves possessing orbital angular momentum (OAM) are powerful tools for applications in optical communications, new quantum technologies and optical tweezers. Recent…
FEL stochastic spectroscopy revealing silicon bond softening dynamics
Dario De Angelis, Emiliano Principi, Filippo Bencivenga +20
Time-resolved X-ray Emission/Absorption Spectroscopy (Tr-XES/XAS) is an informative experimental tool sensitive to electronic dynamics in materials, widely exploited in diverse res…
Extreme ultraviolet wave packet interferometry of the autoionizing HeNe dimer
Daniel Uhl, Andreas Wituschek, Rupert Michiels +24
Femtosecond extreme ultraviolet wave packet interferometry (XUV-WPI) was applied to study resonant inter-atomic Coulombic decay (ICD) in the HeNe dimer. The high demands on phase s…
The photochemical ring-opening reaction of 1,3-cyclohexadiene: complex dynamical evolution of the reactive state
O. Travnikova, T. Piteša, A. Ponzi +19
The photochemically induced ring-opening isomerization reaction of 1,3-cyclohexadiene (CHD) to 1,3,5-hexatriene (HT) is a textbook example of a pericyclic reaction, and has been am…
Studying ultrafast Rabi dynamics with a short-wavelength seeded free-electron laser
Saikat Nandi, Edvin Olofsson, Mattias Bertolino +26
Rabi oscillations are periodic modulations of populations in two-level systems interacting with a time-varying field. They are ubiquitous in physics with applications in different…
Collective enhancement of above threshold ionization by resonantly excited helium nanodroplets
R. Michiels, M. Abu-samha, L. B. Madsen +18
Clusters and nanodroplets hold the promise of enhancing high-order nonlinear optical effects due to their high local density. However, only moderate enhancement has been demonstrat…
Observation of magnetic helicoidal dichroism with extreme ultraviolet light vortices
Mauro Fanciulli, Matteo Pancaldi, Emanuele Pedersoli +17
We report on the experimental evidence of magnetic helicoidal dichroism, observed in the interaction of an extreme ultraviolet vortex beam carrying orbital angular momentum with a…
Pulse-to-pulse wavefront sensing at free-electron lasers using ptychography
Simone Sala, Benedikt J. Daurer, Michal Odstrcil +7
The pressing need for the detailed wavefront properties of ultra-bright and ultra-short pulses produced by free-electron lasers (FELs) has spurred the development of several comple…
Single shot time-resolved magnetic x-ray absorption at a Free Electron Laser
Emmanuelle Jal, Mikako Makita, Benedikt Rösner +18
Ultrafast dynamics are generally investigated using stroboscopic pump-probe measurements, which characterize the sample properties for a single, specific time delay. These measurem…
Seeded x-ray free-electron laser generating radiation with laser statistical properties
O. Yu. Gorobtsov, G. Mercurio, F. Capotondi +12
The invention of optical lasers led to a revolution in the field of optics and even to the creation of completely new fields of research such as quantum optics. The reason was thei…
In-situ single-shot diffractive fluence mapping for X-ray free-electron laser pulses
Michael Schneider, Christian M. Günther, Bastian Pfau +7
Free-electron lasers (FEL) in the extreme ultraviolet (XUV) and X-ray regime opened up the possibility for experiments at high power densities, in particular allowing for fluence-d…
Soft x-rays induce femtosecond solid-to-solid phase transition
Franz Tavella, Hauke Höppner, Victor Tkachenko +12
Soft x-rays were applied to induce graphitization of diamond through a non-thermal solid-to-solid phase transition. This process was observed within poly-crystalline diamond with a…