1. Tianjin Key Laboratory of Functional Crystal Materials, Institute of Functional Crystals, Tianjin University of Technology, Tianjin 300384, China
2. The Institute of Laser & Optoelectronics, College of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China
3. Key Laboratory of Optoelectronic Information Technology (Ministry of Education), Tianjin University, Tianjin 300072, China