8 papers
Attosecond Compression of Relativistic Electron Pulses via Continuous Harmonic Undulator Resonance
Hao Sun, Xiaofan Wang, Xiaozhe Shen +4
Extending megaelectronvolt ultrafast electron diffraction (MeV UED) into the attosecond regime is essential for resolving intrinsic structural dynamics, yet requires simultaneously…
Fully coherent short wavelength free-electron laser driven by a single sub-microjoule seed
Lanpeng Ni, Zheng Qi, Xingtao Wang +33
High-repetition-rate, fully coherent extreme-ultraviolet (EUV) and X-ray free-electron lasers (FELs) are essential for advanced time-resolved ultrafast spectroscopies. While extern…
Development of a quadripartite wakefield structure as dechirper for free electron laser
Yu Ji, Congrui Lei, Jiahang Shao +13
Wakefield structures are critical for beam manipulation in free-electron lasers (FELs), particularly when serving as dechirpers, where beam-induced longitudinal wakefields compensa…
Orbit-Controlled Generation of Two-color Attosecond Mode-locked Free-electron Lasers
Tu Lingjun, Sun Hao, Yi Huaiqian +5
The generation of attosecond X-ray pulses has garnered significant attention within the X-ray free-electron laser (FEL) community due to their potential for ultrafast time-resolved…
High-Efficiency Plasma-Based Compressor for Ultrafast Soft X-ray Free-Electron Lasers
Mingchang Wang, Li Zeng, Bingbing Zhang +5
The generation of intense, femtosecond-scale X-ray pulses is crucial for probing matter under extreme temporal and field conditions. Current chirped-pulse amplification (CPA) techn…
Demonstration of Direct-amplification Enabled Harmonic Generation in an Ultraviolet Free-Electron Laser
Hao Sun, Jitao Sun, Li Zeng +14
We report the experimental demonstration of direct-amplification enabled harmonic generation in an ultraviolet free-electron laser (FEL) driven by a low-intensity seed laser. By em…