2018/04/24 by Li-Xiang Hu, Hu, Li-Xiang, Tong-Pu Yu +16 · 1 citation
Engineering · Physics and Astronomy · #Atomic physics #Attosecond #Beam (structure) #Bunches #Electron #FOS: Physical sciences #Femtosecond #Laser #Laser-Matter Interactions and Applications #Laser-Plasma Interactions and Diagnostics #Laser-induced spectroscopy and plasma #Nuclear physics #Optics #Physics #Plasma Physics (physics.plasm-ph) #Ultrashort pulse #physics.plasm-ph
paper · pdf · doi:10.48550/arxiv.1804.08846
published in arXiv (Cornell University) (Cornell University) · 9 pages
arxiv created 2018/04/24 · openalex publication_date 2018/04/24 · arxiv updated 2018/04/25 · openalex created_date 2018/05/07 · openalex updated_date 2026/07/28
Generation of attosecond bunches of energetic electrons offers significant potential from ultrafast physics to novel radiation sources. However, it is still a great challenge to stably produce such electron beams with lasers, since the typical sub-femtosecond electron bunches from laser-plasma interactions either carry low beam charge, or propagate for only several tens of femtoseconds. Here we propose an all-optical scheme for generating dense attosecond electron bunches via the interaction of an intense Laguerre-Gaussian (LG) laser pulse with a nanofiber. The stable bunch train results from the unique field structure of a circularly polarized LG laser pulse, enabling each bunch to be phase-locked and accelerated forward with low divergence, high beam charge and large beam-angular-momentum. This paves the way for wide applications in various fields, e.g., ultrabrilliant attosecond x/γ-ray emission.