1. State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques and Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices South China University of Technology Guangzhou 510641 China
2. Department of Chemistry City University of Hong Kong Hong Kong 999077 China
3. Laboratory of Crystal Physics Kirensky Institute of Physics Federal Research Center KSC SB RAS Krasnoyarsk 660036 Russia
4. Institute of Engineering Physics and Radioelectronics Siberian Federal University Krasnoyarsk 660041 Russia
5. Research and Development Department Kemerovo State University Kemerovo 650000 Russia
6. School of Physics and Optoelectronics South China University of Technology Guangzhou 510641 China