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. School of Applied Physics and Materials Wuyi University Jiangmen 529020 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. Department of Physics Far Eastern State Transport University Khabarovsk 680021 Russia