Vector Effects of Dissipative Soliton in All-Fiber MOPA System
Vector Effects of Dissipative Soliton in All-Fiber MOPA System
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DOI：
10.1109/jphot.2019.2941563
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发表时间：
2019-09
影响因子：
2.4
通讯作者：
Xiang-Yue Li;Shixiong Liu;Meng Liu;A. Luo;Z. Luo;Wen-Cheng Xu
中科院分区：
文献类型：
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作者：
Xiang-Yue Li;Shixiong Liu;Meng Liu;A. Luo;Z. Luo;Wen-Cheng Xu
种子激光源的性能对主振功率放大器（MOPA）系统的输出脉冲质量有很大影响。本文报道了全光纤MOPA结构中孤子矢量特征对脉冲均匀性的影响。我们证明了尽管耗散孤子种子源的强度是均匀的，但是如果孤子的偏振态不被锁定，即偏振旋转矢量孤子，MOPA输出的脉冲序列的强度会出现波动。研究发现，保偏光纤放大器中脉冲强度不均匀的现象是极化不稳定性和极化相关增益共同作用的结果。结果表明，种子脉冲源的偏振演化是产生稳定脉冲串的关键，对孤子和高功率脉冲光纤激光器的研究也有一定的参考价值。
The performance of seed laser source will have a great impact on the output pulse quality of the master oscillator power amplifier (MOPA) system. Here, we report the influence of the soliton vector features on the pulse uniformity in an all-fiber MOPA configuration. We demonstrated that, although the intensity of the dissipative soliton seed source is uniform, the intensity of the output pulse train from the MOPA will show fluctuations if the soliton polarization state is not locked, i.e., polarization-rotating vector soliton. It is found that the appearance of non-uniform pulse intensity is caused by the combination of the polarization instability and the polarization dependent gain in the polarization maintaining fiber amplifier. The obtained results indicate that the polarization evolution of seed pulsed source is critical to generation of stable pulse train from the MOPA, and also might be useful to the communities dealing with solitons and high-power pulsed fiber lasers.