Mode-locking refers to the generation of ultrashort optical pulses in laser systems. A comprehensive study of achieving high-energy pulses in a ring cavity fiber laser that is passively mode-locked by a series of waveplates and a polarizer is presented in this paper. Specifically, it is shown that the multipulsing instability can be circumvented in favor of bifurcating to higher-energy single pulses by appropriately adjusting the group velocity dispersion in the fiber and the waveplate/polarizer settings in the saturable absorber. The findings may be used as practical guidelines for designing high-power lasers since the theoretical model relates directly to the experimental settings.

中文翻译：

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光纤激光器的高能被动锁模。


锁模是指在激光系统中产生超短光脉冲。本文提出了在由一系列波片和偏振器被动锁模的环形腔光纤激光器中实现高能脉冲的综合研究。具体来说，结果表明，通过适当调整光纤中的群速度色散和可饱和吸收器中的波片/偏振器设置，可以避免多脉冲不稳定性，有利于分叉为更高能量的单脉冲。由于理论模型与实验设置直接相关，因此这些发现可用作设计高功率激光器的实用指南。