1. School of Materials Science and Engineering State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou China
2. 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 Guangzhou China
3. Laboratory of Micro‐Nano Optoelectronic Functional Materials Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai China
4. Key Laboratory of Materials for High‐Power Laser Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai China