1. Innovation Laboratory of Terahertz Biophysics, National Innovation Institute of Defense Technology, Beijing 100071, China
2. School of Optical-Electrical Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
3. School of Physics, Peking University, Beijing 100871, China
4. School of Chemistry and Chemical Engineering, and Institute of Molecular Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, China