4.5 Article

High-energy pulses from all-PM ultra-long Yb-fiber laser mode-locked with quasi-synchronous pumping

期刊

OPTICAL FIBER TECHNOLOGY
卷 66, 期 -, 页码 -

出版社

ELSEVIER SCIENCE INC
DOI: 10.1016/j.yofte.2021.102650

关键词

Fiber lasers; Laser mode locking; Synchronous pumping

资金

  1. Russian Science Foundation [17-12-01281]
  2. Ministry of Science and Higher Education of the Russian Federation [FSUS-2020-0036]

向作者/读者索取更多资源

This study explores the mode-locking capabilities and frontiers of a quasi-synchronous pumping technique in an all-polarization-maintaining kilometer-long Yb-fiber laser, demonstrating stable generation of linearly polarized high-energy pulses with tunable nanosecond duration. Detuning of the pump modulation frequency is found to be crucial for pulse shaping control in such mode-locked laser systems.
We explore, for the first time, mode-locking capabilities and frontiers of a quasi-synchronous pumping technique implemented in an all-polarization-maintaining (all-PM) kilometer-long Yb-fiber laser. This technically simple approach to synchronous pumping relies on sine-wave modulation of pump power at a frequency slightly detuned from the laser cavity inter-mode frequency or its multiple. In combination with the scaled-up all-PMfiber cavity, it has provided stable generation of linearly polarized (scalar) high-energy (up to 130 nJ) pulses with tunable nanosecond duration at the fundamental and harmonic repetition rates ranging from 0.23 to 0.69 MHz. The obtained combination of such a low repetition rate, such a high energy level, and polarization stability is unique for actively mode-locked all-fiber stimulated-emission-based master oscillators. We reveal that detuning of the pump modulation frequency is the key parameter for the pulse shaping control in such mode-locked laser, and further intracavity pulse shortening towards sub-nanosecond duration is theoretically possible with measures preventing pulses from accumulation of excessive nonlinear phase. The demonstrated approach opens up new prospects for pump-modulation-based mode locking in diode-pumped lasers with such inertial active media as rare-earth-doped fibers.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据