Mode-locked 2.8-μm fluoride fiber laser:from soliton to breathing pulse  

作　　者：Zhipeng Qin Guoqiang Xie Hongan Gu Ting Hai Peng Yuan Jingui Ma Liejia Qian 

机构地区：[1]Shanghai Jiao Tong University,School of Physics and Astronomy,Shanghai,China [2]Shanghai Jiao Tong University,Collaborative Innovation Center of Inertial Fusion Sciences and Applications,Shanghai,China [3]Shanghai Jiao Tong University,Key Laboratory for Laser Plasmas,Ministry of Education,Shanghai,China

出　　处：《Advanced Photonics》2019年第6期1-6,共6页先进光子学（英文）

基　　金：the National Natural Science Foundation of China(Grant Nos.61675130,91850203,and 11721091);the National Postdoctoral Program for Innovative Talents(Grant No.BX20170149).

摘　　要：The mode-locked fluoride fiber laser(MLFFL)is an exciting platform for directly generating ultrashort pulses in the mid-infrared(mid-IR).However,owing to difficulty in managing the dispersion in fluoride fiber lasers,MLFFLs are restricted to the soliton regime,hindering pulse-energy scaling.We overcame the problem of dispersion management by utilizing the huge normal dispersion generated near the absorption edge of an infrared-bandgap semiconductor and promoted MLFFL from soliton to breathing-pulse mode-locking.In the breathing-pulse regime,the accumulated nonlinear phase shift can be significantly reduced in the cavity,and the pulse-energy-limitation effect is mitigated.The breathing-pulse MLFFL directly produced a pulse energy of 9.3 nJ and pulse duration of 215 fs,with a record peak power of 43.3 kW at 2.8μm.Our work paves the way for the pulse-energy and peak-power scaling of mid-IR fluoride fiber lasers,enabling a wide range of applications.

关 键 词：ultrafast fiber laser mid-infrared breathing pulse MODE-LOCKING dispersion management 

分 类 号：TN248[电子电信—物理电子学]