1. Hebei Key Laboratory of Optic-Electronic Information and Materials, College of Physics Science & Technology, Hebei University 1 , Baoding 071002, China
2. Photonics Information Innovation Center and Hebei Provincial Center for Optical Sensing Innovations, College of Physics Science & Technology, Hebei University 2 , Baoding 071002, China
3. Department of Physics, Yantai University 3 , Yantai 264005, China
4. Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade 4 , Taipa, Macao SAR, China