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

作     者：Liu, Huimin Tian, Jinrong Zhang, Zexin Liu, Haiyan Mao, Lin Song, Yanrong 刘慧敏;田金荣;张泽新;刘海燕;毛琳;宋晏蓉

作者机构：Beijing Univ Technol Sch Phys & Optoelect Engn Beijing 100124 Peoples R China 

出 版 物：《CHINESE OPTICS LETTERS》 (中国光学快报（英文版）)

年 卷 期：2024年第22卷第8期

页      面：081402-081402页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：National Natural Science Foundation of China Beijing Natural Science Foundation 

主　　题：dynamic process dispersive Fourier transform mode-locked solid-state laser SOLITON EXPLOSIONS SPECTROSCOPY 

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.