1. Center for Advanced Laser Technology, Hebei University of Technology, Tianjin 300401, China
2. Hebei Key Laboratory of Advanced Laser Technology and Equipment, Tianjin 300401, China
3. Tianjin Key Laboratory of Electronic Materials and Devices, Tianjin 300401, China
4. State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300401, China