Spiral field generation in Smith-Purcell radiation by helical metagratings

• Main Authors: Jing, Liqiao, Wang, Zuojia, Lin, Xiao, Zheng, Bin, Xu, Su, Shen, Lian, Yang, Yihao, Gao, Fei, Chen, Min, Chen, Hongsheng
• 其他作者: School of Physical and Mathematical Sciences
• 格式: Article
• 語言: English
• 出版: 2020
• 主題: Science::Physics; Angular Momentum; Dipole
• 在線閱讀: https://hdl.handle.net/10356/145513

Moving electrons interacting with media can give rise to electromagnetic radiations and has been emerged as a promising platform for particle detection, spectroscopies, and free-electron lasers. In this letter, we investigate the Smith-Purcell radiation from helical metagratings, chiral structures s...