1. Artificial Crystal Research Center Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai China
2. Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing China
3. Institute of Physics of the Czech Academy of Sciences Prague Czech Republic
4. Faculty of Nuclear Sciences and Physical Engineering Czech Technical University in Prague Prague Czech Republic
5. NICHe Tohoku University Sendai Miyagi Japan
6. Institute for Materials Research Tohoku University Sendai Miyagi Japan
7. Institute of Laser Engineering Osaka University Suita Osaka Japan