[1] Peking Univ, Sch Elect Engn & Comp Sci, State Key Lab Adv Opt Commun Syst & Networks, Beijing 100871, Peoples R China
[2] Chinese Acad Sci, Inst Semicond, Natl Res Ctr Optoelect Engn, Beijing 100871, Peoples R China
[3] Tianjin Univ, Sch Precis Instrument & Optoelect Engn, Ultrafast Laser Lab, Key Lab Optoelect Informat Tech Sci,Minist Educ, Tianjin 300072, Peoples R China
[4] LZ Lasers Inc, Zhongshan 528400, Guangdong, Peoples R China