1. Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, People's Republic of China
2. University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
3. Department of Materials Science and State Key Laboratory of ASIC and system, Fudan University, Shanghai 200433, People's Republic of China
4. Mathematics and Science College, Shanghai Normal University, Shanghai 200234, People's Republic of China