5 papers
High-power attosecond X-ray free-electron lasers: physics and design strategy
Chenzhi Xu, Jiawei Yan, Ye Chen +5
Attosecond pulses from X-ray free-electron laser (XFEL) have opened new opportunities for probing ultrafast electronic dynamics on the Angstrom--attosecond spatiotemporal scale. Mo…
U-Net-based surrogate modeling for attosecond X-ray free-electron lasers
Yufei Wei, Bingyang Yan, Chenzhi Xu +2
Attosecond X-ray pulse generation in modern X-ray free-electron lasers relies on strongly compressed, precisely tailored electron bunches, making accurate diagnostics and control o…
Spatiotemporal shaping of attosecond X-rays with time-dependent orbital angular momentum
Chenzhi Xu, Jiawei Yan, Gianluca Geloni +2
Attosecond X-ray pulses are indispensable for exploring ultrafast phenomena in matter on Angstrom and attosecond scales. Here we propose a new method to realize spatiotemporal shap…
Generation of high-power attosecond x-ray FEL pulses carrying orbital angular momentum
Chenzhi Xu, Jiawei Yan, Gianluca Geloni +2
X-ray beams carrying orbital angular momentum (OAM), are emerging as a powerful tool to probe matter. Recently, a method called self-seeded FEL with OAM (SSOAM) has been proposed t…
AttoSHINE: Generation of continuous-wave terawatt-scale attosecond X-ray pulses at SHINE
Bingyang Yan, Chenzhi Xu, Si Chen +4
Attosecond X-ray pulses are a critical tool for tracking ultrafast electron dynamics in condensed matter, molecular systems, and strongly correlated materials. Recent breakthroughs…