1. Institute for School of Science, Northwest A&F University, Yangling, China
2. Institute for College of Information Engineering, Northwest A&F University, Yangling, China
3. Institute for Chongqing United Microelectronics Center, Chongqing, China
4. Institute for State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China