High-energy noiselike rectangular pulse in a passively mode-locked figure-eight fiber laser
High-energy noiselike rectangular pulse in a passively mode-locked figure-eight fiber laser
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DOI：
10.7567/apex.7.042701
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发表时间：
2014-03
影响因子：
2.3
通讯作者：
Xu-Wu Zheng;Z. Luo;Hao Liu;Nian Zhao;Qiuyi Ning;Meng Liu;Xinhuan Feng;Xiaobo Xing;A. Luo
中科院分区：
文献类型：
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作者：
Xu-Wu Zheng;Z. Luo;Hao Liu;Nian Zhao;Qiuyi Ning;Meng Liu;Xinhuan Feng;Xiaobo Xing;A. Luo
报道了在锁模8字形光纤激光器中产生的高能量类噪声矩形脉冲。在示波器上，类噪声脉冲看起来具有矩形形状。脉冲宽度随泵浦功率的增加而增加，而峰值幅度保持不变，这与耗散孤子共振的脉冲演化非常相似。然而，使用自相关器确认脉冲类型为类噪声脉冲。在最大泵浦功率为350 mW时，获得了脉宽为76 ns、能量为135 nJ的类噪声矩形脉冲。研究结果为阐明光纤激光器中高能量矩形脉冲的另一种形成机制提供了新的指导。
We report on the generation of a high-energy noiselike rectangular pulse in a mode-locked figure-eight fiber laser. The noiselike pulse appeared to have a rectangular shape on the oscilloscope. The pulse duration increased with increasing pump power, while the peak amplitude remained constant, which is very similar to the pulse evolution of dissipative soliton resonance. However, the pulse type is confirmed as a noiselike pulse using an autocorrelator. With the maximum pump power of 350 mW, the 135 nJ noiselike rectangular pulse with 76 ns duration was achieved. The results provide a new guideline for clarifying an alternative formation mechanism of the high-energy rectangular pulses in fiber lasers.