1. Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
2. Science Island Branch of Graduate School, University of Science and Technology of China, Hefei, Anhui 230026, China
3. Advanced Laser Technology Laboratory of Anhui Province, Hefei 230037, China
4. School of Environmental Science & Optoelectronic Technology, University of Science and Technology of China, Hefei, Anhui 230026, China