1. State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices School of Materials Science and Engineering South China University of Technology Guangzhou 510641 China
2. Laboratory of Crystal Physics Federal Research Center KSC SB RAS Kirensky Institute of Physics Krasnoyarsk 660036 Russia
3. Department of Engineering Physics and Radioelectronics Siberian Federal University Krasnoyarsk 660041 Russia
4. Department of Physics Far Eastern State Transport University Khabarovsk 680021 Russia
5. School of Physics and Optoelectronics South China University of Technology Guangzhou 510641 China