2014/10/01 by Haixiao Deng, Meng Zhang, Chao Feng +22 · 51 citations
Engineering · Physics and Astronomy · #Advanced X-ray Imaging Techniques #Atomic physics #Beam (structure) #Cathode ray #Computer science #Electron #Free space #Free-electron laser #Laser #Laser beams #Linearizer #Nuclear physics #Optics #Optoelectronics #Particle Accelerators and Free-Electron Lasers #Particle accelerators and beam dynamics #Phase (matter) #Phase space #Physics #Quantum mechanics #Space (punctuation) #physics.acc-ph #physics.optics
paper · pdf · doi:10.1103/physrevlett.113.254802
published in Physical Review Letters 113(25), 254802 (American Physical Society) · 6 pages, 5 figures
arxiv created 2014/10/01 · openalex publication_date 2014/12/19 · arxiv updated 2014/12/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Removal of the undesired time-energy correlations in the electron beam is of paramount importance for efficient lasing of a high-gain free-electron laser. Recently, it has been theoretically and experimentally demonstrated that the longitudinal wakefield excited by the electrons themselves in a corrugated structure allows for precise control of the electron beam phase space. In this Letter, we report the first utilization of a corrugated structure as a beam linearizer in the operation of a seeded free-electron laser driven by a 140 MeV linear accelerator, where a gain of ∼10 000 over spontaneous emission was achieved at the second harmonic of the 1047 nm seed laser, and a free-electron laser bandwidth narrowing by 50% was observed, in good agreement with the theoretical expectations.