| Title | Vortex laser beam generation from laser interaction with azimuthal plasma phase slab at relativistic intensities |
| Authors | Long, Tianyun Zhou, Cangtao Wu, Sizhong Ju, Libao Jiang, Ke Bai, Ruixue Huang, Taiwu Zhang, Hua Yu, Mingyang Ruan, Shuangchen He, Xiantu |
| Affiliation | Peking Univ, HEDPS, Ctr Appl Phys & Technol, Beijing 100871, Peoples R China Peking Univ, Sch Phys, Beijing 100871, Peoples R China Shenzhen Technol Univ, Ctr Adv Mat Diagnost Technol, Shenzhen 518118, Peoples R China Shenzhen Technol Univ, Coll Engn Phys, Shenzhen 518118, Peoples R China China Acad Engn Phys, Grad Sch, Beijing 100088, Peoples R China Shanghai Jiao Tong Univ, Collaborat Innovat Ctr IFSA CICIFSA, Shanghai 200240, Peoples R China |
| Issue Date | 8-Feb-2021 |
| Publisher | PHYSICAL REVIEW E |
| Abstract | It is shown theoretically and by simulation that a Gaussian laser beam of relativistic intensity interacting with a uniform-thickness plasma slab of azimuthally varying density can acquire orbital angular momentum (OAM). During the interaction, the laser ponderomotive force and the charge-separation force impose a torque on the plasma particles. The affected laser light and plasma ions gain oppositely directed axial OAM, but the plasma electrons remain almost OAM free. High OAM conversion efficiency is achieved due to the strong azimuthal electromagnetic energy flow during the laser phase modulation. The present scheme should provide useful reference for applications requiring relativistic-intense vortex light. |
| URI | http://hdl.handle.net/20.500.11897/604820 |
| ISSN | 2470-0045 |
| DOI | 10.1103/PhysRevE.103.023204 |
| Indexed | SCI(E) |
| Appears in Collections: | 工学院 物理学院 |
