Opt Lett. 2014 Jan 15;39(2):319-22. doi: 10.1364/OL.39.000319.
We report on an experimental study of spectral fluctuations induced by intracavity Raman conversion in a passively partially mode-locked, all-normal dispersion fiber laser. Specifically, we use dispersive Fourier transformation to measure single-shot spectra of Raman-induced noise-like pulses, demonstrating that for low cavity gain values Raman emission is sporadic and follows rogue-wave-like probability distributions, while a saturated regime with Gaussian statistics is obtained for high pump powers. Our experiments further reveal intracavity rogue waves originating from cascaded Raman dynamics.
我们报告了在被动部分锁模、全正色散光纤激光器中腔内拉曼转换引起的光谱涨落的实验研究。具体来说，我们使用色散傅里叶变换来测量拉曼诱导的类噪声脉冲的单次光谱，证明对于低腔增益值，拉曼发射是零散的，并遵循不规则波样概率分布，而对于高泵浦功率则获得了具有高斯统计特性的饱和状态。我们的实验进一步揭示了源自级联拉曼动力学的腔内不规则波。
