1. Department of Optical Science and Engineering
2. Key Laboratory of Micro and Nano Photonic Structures
3. Ministry of Education
4. Fudan University
5. Shanghai 200433
6. Ningbo Institute of Materials Technology and Engineering
7. Chinese Academy of Sciences
8. Ningbo 315201
9. China
10. Department of Physics and Astronomy and Ames Laboratory
11. Iowa State University
12. Ames
13. USA
14. Institute of Electronic Structure and Laser (IESL)