1. State Key Laboratory of Crystal Materials
2. Shandong University
3. 250100 Jinan
4. China
5. Qian Xuesen Laboratory of Space Technology
6. China Academy of Space Technology
7. 100094 Beijing
8. Department of Physics and Center for Applied Photonics
9. University of Konstanz
10. D-78457 Konstanz
11. Germany
12. Institute for Technical Physics