1. College of Optics and Electronic Science and Technology, China Jiliang University, Hangzhou, 310018, P. R. China
2. State Key Laboratory of High Power Semiconductor Lasers, Changchun University of Science and Technology, Changchun, 130022, P. R. China
3. Semiconductor Laser and Application Laboratory, Zhongshan Institute of Changchun University of Science and Technology, Zhongshan, 528437, P. R. China
4. Southwest Institute of Technical Physics, Chengdu, 610041, P. R. China