1. State Key Laboratory of Luminescent Materials and Devices and Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques School of Materials Science and Engineering South China University of Technology Guangzhou 510640 China
2. School of Physics and Materials Science Guangzhou University Guangzhou 510006 China
3. School of Electric Power South China University of Technology Guangzhou 510640 China
4. College of Optical Science and Engineering State Key Laboratory of Modern Optical Instrumentation Zhejiang University Hangzhou 310027 China
5. Peng Cheng Laboratory Shenzhen 518000 China