224 citations · 508 across the 12 of their papers we have counts for
13 papers
Mitigation of the Microbunching Instability Through Transverse Landau Damping
A. D. Brynes, G. Perosa, C. -Y. Tsai +14
The microbunching instability has been a long-standing issue for high-brightness free-electron lasers (FELs), and is a significant show-stopper to achieving full longitudinal coher…
Uncovering the nature of transient and metastable non-equilibrium phases in 1-TaS
Tanusree Saha, Arindam Pramanik, Barbara Ressel +7
Complex systems are characterized by strong coupling between different microscopic degrees of freedom. Photoexcitation of such materials can drive them into new transient and long-…
All-optical spin injection in silicon revealed by element specific time-resolved Kerr effect
Simone Laterza, Antonio Caretta, Richa Bhardwaj +18
Understanding how a spin current flows across metal-semiconductor interfaces at pico- and femtosecond timescales has implications for ultrafast spintronics, data processing and sto…
Characterization of soft X-ray echo-enabled harmonic generation free-electron laser pulses in the presence of incoherent energy modulations
N. S. Mirian, G. Perosa, E. Hemsing +14
Echo-enabled harmonic generation free-electron lasers (EEHG FELs) are promising candidates to produce fully coherent soft x-ray pulses by virtue of efficient high harmonic frequenc…
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…
Photo-induced phase transition and associated time scales in the excitonic insulator TaNiSe
Tanusree Saha, Denis Golez, Giovanni De Ninno +5
We investigate the non-equilibrium electronic structure and characteristic time scales in a candidate excitonic insulator, TaNiSe, using time- and angle-resolved photoemiss…
Microbunching Instability Characterisation via Temporally Modulated Laser Pulses
A. D. Brynes, I. Akkermans, E. Allaria +19
High-brightness electron bunches, such as those generated and accelerated in free-electron lasers (FELs), can develop small-scale structure in the longitudinal phase space. This ca…
Selective spin and nematic excitations using polarized pump pulses
Ganesh Adhikary, Tanusree Saha, Primoz Rebernik Ribic +6
Quantum materials display exotic behaviours related to the interplay between temperature-driven phase transitions. Here, we study electron dynamics in one such material, CaFe2As2,…
Tracking Attosecond Electronic Coherences Using Phase-Manipulated Extreme Ultraviolet Pulses
Andreas Wituschek, Lukas Bruder, Enrico Allaria +31
The recent development of ultrafast extreme ultraviolet (XUV) coherent light sources bears great potential for a better understanding of the structure and dynamics of matter. Promi…
Orbital-dependent electron dynamics in Fe-pnictide superconductors
Ganesh Adhikary, Barbara Ressel, Matija Stupar +6
We report on orbital-dependent quasiparticle dynamics in EuFeAs, a parent compound of Fe-based superconductors and a novel way to experimentally identify this behavior, usi…
Tunable orbital angular momentum in high-harmonic generation
D. Gauthier, P. Rebernik Ribič, G. Adhikary +14
Optical vortices are currently one of the most intensively studied topics in optics. These light beams, which carry orbital angular momentum (OAM), have been successfully utilized…
Spectro-temporal shaping of seeded free-electron laser pulses
David Gauthier, Primož Rebernik Ribič, Giovanni De Ninno +8
We demonstrate the ability to control and shape the spectro-temporal content of extreme-ultraviolet (XUV) pulses produced by a seeded free-electron laser (FEL). The control over th…
Generation of Coherent Extreme-Ultraviolet Radiation Carrying Orbital Angular Momentum
Primož Rebernik Ribič, David Gauthier, Giovanni De Ninno
We propose an effective scheme for the generation of intense coherent extreme ultraviolet light beams carrying orbital angular momentum (OAM). The light is produced by a high-gain…