1. The Hong Kong Polytechnic University Shenzhen Research Institute
2. Shenzhen, PR China
3. Department of Applied Physics
4. The Hong Kong Polytechnic University
5. Hong Kong SAR, China
6. State Key Laboratory of Applied Optics
7. Changchun Institute of Optics
8. Fine Mechanics and Physics
9. Chinese Academy of Sciences
10. Chang Chun, PR China