1. College of Physics
2. Qingdao University
3. Qingdao
4. China
5. Key Laboratory of Photonics Materials and Technology in Universities of Shandong (Qingdao University)
6. College of Precision Instruments and Opto-electronics Engineering
7. Tianjin University
8. Tianjin 300072
9. Key Laboratory of Opto-electronic Information Technology