Dynamics of multi-state in a simplified mode-locked Yb-doped fiber laser  

作　　者：Zexin Zhang Jinrong Tian Youshuo Cui Yunfeng Wu Yanrong Song 张泽新;田金荣;崔友硕;吴云峰;宋晏蓉(School of Physics and Optoelectronics,Faculty of Science,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]School of Physics and Optoelectronics,Faculty of Science,Beijing University of Technology,Beijing 100124,China

出　　处：《Chinese Optics Letters》2022年第8期47-53,共7页中国光学快报（英文版）

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

摘　　要：The dispersive Fourier transform technique provides feasibility of exploring non-repetitive events and the buildup process in ultrafast lasers.In this paper,we report a new buildup process of dissipative solitons in a simplified mode-locked Yb-doped fiber laser,which includes more complex physics stages such as the Q-switching stage,raised and damped relaxation oscillation stages,noise-like stage,successive soliton explosions stage,and soliton breathing stage.Complete evolution dynamics of noise-like pulse and double pulse are also investigated with dispersive Fourier transform.For the noise-like pulse dynamics process,it will only experience the Q-switching and relaxation oscillation stages.In the case of dissipative soliton and noise-like pulse,the double pulse buildup behavior is manifested as the replication of individual pulses.A weak energy migration occurs between two pulses before reaching steady state.Meanwhile,real-time mutual conversion of the dissipative soliton and noise-like pulse has been experimentally observed,which appears to be instantaneous without extra physical processes.To the best of our knowledge,this is the first report on these physical phenomena observed together in a mode-locked fiber laser.The results further enrich the dynamics of mode-locked fiber lasers and provide potential conditions for obtaining intelligent mode-locked lasers with controllable output.

关 键 词：dispersive Fourier transform dynamics process simplified mode-locked fiber lasers dissipative soliton noise-like pulse DOUBLE-PULSE 

分 类 号：TN248[电子电信—物理电子学]