240 citations · 478 across the 13 of their papers we have counts for
13 papers
Time-domain extreme ultraviolet diffuse scattering spectroscopy of nanoscale surface phonons
F. Capotondi, A. Maznev, F. Bencivenga +18
We report the observation of dynamic fringe patterns in the diffuse scattering of extreme ultraviolet light from surfaces, following femtosecond optical excitation. At each point o…
Ultrafast Opto-magnetic Effects in the Extreme Ultraviolet Spectral Range
Martin Hennecke, Clemens von Korff Schmising, Kelvin Yao +20
Coherent light-matter interactions mediated by opto-magnetic phenomena like the inverse Faraday effect (IFE) are expected to provide a non-thermal pathway for ultrafast manipulatio…
Atom-Specific Probing of Electron Dynamics in an Atomic Adsorbate by Time-Resolved X-ray Spectroscopy
Simon Schreck, Elias Diesen, Martina Dell'Angela +25
The electronic excitation occurring on adsorbates at ultrafast time scales from optical lasers that initiate surface chemical reactions is still an open question. Here, we report t…
Ultrafast adsorbate excitation probed with sub-ps resolution XAS
Elias Diesen, Hsin-Yi Wang, Simon Schreck +24
We use a pump-probe scheme to measure the time evolution of the C K-edge X-ray absorption spectrum (XAS) from CO/Ru(0001) after excitation by an ultrashort high-intensity optical l…
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…
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…
Coherent control with a short-wavelength Free Electron Laser
K. C. Prince, E. Allaria, C. Callegari +37
XUV and X-ray Free Electron Lasers (FELs) produce short wavelength pulses with high intensity, ultrashort duration, well-defined polarization and transverse coherence, and have bee…
X-ray optical systems: from metrology to Point Spread Function
D. Spiga, L. Raimondi
One of the problems often encountered in X-ray mirror manufacturing is setting proper manufacturing tolerances to guarantee an angular resolution - often expressed in terms of Poin…
Angular resolution measurements at SPring-8 of a hard X-ray optic for the New Hard X-ray Mission
D. Spiga, L. Raimondi, A. Furuzawa +18
The realization of X-ray telescopes with imaging capabilities in the hard (> 10 keV) X-ray band requires the adoption of optics with shallow (< 0.25 deg) grazing angles to enhance…
Mirrors for X-ray telescopes: Fresnel diffraction-based computation of point spread functions from metrology
Lorenzo Raimondi, Daniele Spiga
The imaging sharpness of an X-ray telescope is chiefly determined by the optical quality of its focusing optics, which in turn mostly depends on the shape accuracy and the surface…
Two-colour generation in a chirped seeded Free-Electron Laser
B. Mahieu, E. Allaria, D. Castronovo +17
We present the experimental demonstration of a method for generating two spectrally and temporally separated pulses by an externally seeded, single-pass free-electron laser operati…
X-ray scattering of periodic and graded multilayers: comparison of experiments to simulations from surface microroughness characterization
B. Salmaso, D. Spiga, R. Canestrari +1
To enhance the reflectivity of X-ray mirrors beyond the critical angle, multilayer coatings are required. Interface imperfections in the multilayer growth process are known to caus…
X-ray beam-shaping via deformable mirrors: analytical computation of the required mirror profile
D. Spiga, L. Raimondi, C. Svetina +1
X-ray mirrors with high focusing performances are in use in both mirror modules for X-ray telescopes and in synchrotron and FEL (Free Electron Laser) beamlines. A degradation of th…