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首页> 外文期刊>Optics Letters >Long-cavity passively mode-locked fiber ring laser with high-energy rectangular-shape pulses in anomalous dispersion regime
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Long-cavity passively mode-locked fiber ring laser with high-energy rectangular-shape pulses in anomalous dispersion regime

机译：异常色散状态下具有高能矩形脉冲的长腔被动锁模光纤环形激光器

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摘要

We report on a long-cavity passively mode-locked fiber laser in the anomalous dispersion regime. The nonlinear polarization rotation technique is employed to achieve mode locking. The output pulse from the fiber laser has a rectangular shape and a corresponding Gaussian-shape spectral profile. Stable mode-locked pulses at a repetition rate of 278 kHz with single pulse energy as high as 715 nJ are obtained under equal bidirectional pumping power of 500 mW in cavity. The experimental results demonstrate that the passively mode-locked fiber laser operating in the anomalous regime can also realize a high-energy pulse, which is different from the conventional low-energy soliton pulse.
机译：我们报告了一种在异常色散状态下的长腔被动锁模光纤激光器。采用非线性偏振旋转技术来实现锁模。光纤激光器的输出脉冲具有矩形形状和相应的高斯形光谱轮廓。在腔体中的双向双向泵浦功率为500 mW的情况下，可以获得具有278 kHz重复频率，单脉冲能量高达715 nJ的稳定锁模脉冲。实验结果表明，在异常情况下工作的被动锁模光纤激光器也可以实现高能脉冲，这与常规的低能孤子脉冲不同。

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