Detection of transient mode-locking dynamics for a femtosecond Yb:KGW laser  

作　　者：Huimin Liu Jinrong Tian Zexin Zhang Haiyan Liu Lin Mao Yanrong Song 刘慧敏;田金荣;张泽新;刘海燕;毛琳;宋晏蓉(School of Physics and Optoelectronic Engineering,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]School of Physics and Optoelectronic Engineering,Beijing University of Technology,Beijing 100124,China

出　　处：《Chinese Optics Letters》2024年第8期70-76,共7页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.61975003);the Beijing Natural Science Foundation(No.4192015)。

摘　　要：The evolution dynamics of mode locking for a solid-state femtosecond Yb:KGW laser is demonstrated and detected with time-stretch dispersive Fourier transform(DFT)technique for the first time,to the best of our knowledge.The Yb:KGW laser is constructed first with a classical X-shaped cavity,and SESAM-assisted Kerr lens mode locking is obtained.Then,a DFT device is built to record the buildup and extinction dynamics of the mode-locked laser.The results suggest that the time of extinction is slightly shorter than the buildup time and both of them experience complex transitions.The results indicate that DFT could also be suitable to detect the transient buildup and extinction process in solid-state lasers,which would help investigate both the evolution of mode locking and characteristics determination for solid-state lasers.

关 键 词：dynamic process dispersive Fourier transform mode-locked solid-state laser 

分 类 号：TN248[电子电信—物理电子学]