2017/01/03 by Dong Wu, D. Wu, Jingwei Wang +1 · 16 citations
Physics and Astronomy · #Angular momentum #Atomic physics #Computational physics #Electron #Laser #Laser-Matter Interactions and Applications #Laser-Plasma Interactions and Diagnostics #Optics #Orbital Angular Momentum in Optics #Physics #Plasma #Quantum mechanics #Space (punctuation) #physics.plasm-ph
paper · pdf · doi:10.1088/1361-6587/aa77c5
published in Plasma Physics and Controlled Fusion 59(9), 095010 (IOP Publishing) · 4 pages, 4 figures
arxiv created 2017/01/03 · openalex publication_date 2017/06/07 · arxiv updated 2017/09/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Abstract Laser beams with Laguerre–Gaussian (LG) mode carry orbital angular momentum (OAM); however, when interacting with plasmas, the net angular momentum acquired by plasmas is basically zero after interaction. Here, we find when there exists a small magetostatic seed along the laser propagation direction, the barrier would be broken, giving rise to dramatic angular momentum transfer from LG-lasers to plasmas. Hence, the net OAM remaining in the plasmas system would continuously enhance the magetostatic field, until the corresponding Larmor frequency of electrons is comparable to the laser frequency in vacuum. Three-dimensional particle-in-cell simulations are performed to confirm our theory, producing spatial-uniform, temporal-stable and extremely-intense magetostatic fields.