203 citations · 323 across the 6 of their papers we have counts for
6 papers
Experimental observation of trajectories beyond the long in high order harmonic generation
S. Bengtsson, E. R. Simpson, N. Ibrakovic +4
We experimentally observe longer than long trajectory influence in high order harmonic generation (HHG) by varying the peak intensity of the driving laser field through either dire…
Spatial control of extreme ultraviolet light with opto-optical phase modulation
Anna Olofsson, Emma Rose Simpson, Neven Ibrakovic +2
Extreme-ultraviolet (XUV) light is notoriously difficult to control due to its strong interaction cross-section with media. We demonstrate a method to overcome this problem by usin…
Attosecond Pulse-shaping using a seeded free-electron laser
Praveen Kumar Maroju, Cesare Grazioli, Michele Di Fraia +41
Attosecond pulses are fundamental for the investigation of valence and core-electron dynamics on their natural timescale. At present the reproducible generation and characterisatio…
Probing Stark-induced nonlinear phase variation with opto-optical modulation
E. R. Simpson, M. Labeye, S. Camp +6
We extend the recently developed technique of opto-optical modulation (OOM) to probe state-resolved ac-Stark-induced phase variations of a coherently excited ensemble of helium ato…
Machine learning applied to single-shot x-ray diagnostics in an XFEL
A. Sanchez-Gonzalez, P. Micaelli, C. Olivier +39
X-ray free-electron lasers (XFELs) are the only sources currently able to produce bright few-fs pulses with tunable photon energies from 100 eV to more than 10 keV. Due to the stoc…
The response of a neutral atom to a strong laser field probed by transient absorption near the ionisation threshold
E. R. Simpson, A. Sanchez-Gonzalez, D. R. Austin +9
We present transient absorption spectra of an extreme ultraviolet attosecond pulse train in helium dressed by an 800 nm laser field with intensity ranging from W/c…