1. Key Laboratory of Weak-Light Nonlinear Photonics, Ministry of Education, School of Physics, Nankai University, Tianjin 300071, China
2. College of Science, Civil Aviation University of China, Tianjin 300300, China
3. State Key Laboratory of Superlattices and Microstructure, Institute of Semiconductors, Chinese Academy of Science, Beijing 100083, China
4. Multi-Discipline Research Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
5. College of Electronic Information and Optical Engineering and Tianjin Key Laboratory of Photo-electronic Thin Film Devices and Technology, Nankai University, Tianjin 300071, China