1. State Key Laboratory on Integrated Optoelectronics
2. College of Electronic Science and Engineering
3. Jilin University
4. Changchun 130012
5. China
6. College of Physics
7. State Key Laboratory of Luminescence and Applications
8. Changchun Institute of Optics Fine Mechanics and Physics
9. Chinese Academy of Sciences
10. Changchun 130033
11. P. R. China