Generation of Accelerating Waves in Smith-Purcell Radiation

Interdisciplinary Center for Quantum Information, State Key Laboratory of Modern Optical Instrumentation, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 310027, China. International Joint Innovation Center, Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang, The Electromagnetics Academy at Zhejiang University, Zhejiang University, Haining 314400, China Jinhua Institute of Zhejiang University, Zhejiang University, Jinhua 321099, China These authors contributed equally to this work. *Corresponding author: zuojiawang@zju.edu.cn; hansomchen@zju.edu.cn