1. Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education)College of Optoeletronic EngineeringChongqing University Chongqing 400044 P. R. China
2. State Key Laboratory of High Field Laser PhysicsShanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences Shanghai 201800 P. R. China
3. Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of Sciences Beijing 100049 P.R. China
4. School of Physical Science and TechnologyShanghaiTech University Shanghai 200031 P. R. China
5. College of Physics and Electronic EngineeringChongqing Normal University Chongqing 401331 P. R. China
6. SIOM and STU Joint Laboratory for Superintense Lasers and the Applications Shanghai 201210 P. R. China