1. College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials of Education Ministry of China, Beijing Key Laboratory of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, China
2. School of Physics, Beihang University, Beijing 100191, China
3. Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, China
4. Beijing Engineering Research Center of Laser Technology, Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China