The famous demonstration of optical rogue waves (RWs), a powerful tool to reveal the fundamental physics in different laser scenarios, opened a flourishing time for temporal statistics. Random fiber laser (RFL) has likewise attracted wide attention due to its great potential in multidisciplinary demonstrations and promising applications. However, owing to the distinctive cavity-free structure, it is a scientific challenge to achieve temporal localized RWs in RFLs, whose feedback arises from multiple scattering in disordered medium. Here, we report the exploration of RW in the highly skewed, transient intensity of an incoherently pumped RFL for the first time, to our knowledge, and unfold the involved kinetics successfully. The corresponding frequency domain measurements demonstrate that the RW event arises from a crucial sustained stimulated Brillouin scattering process with intrinsic stochastic nature. This investigation highlights a novel path to fully understanding the complex physics, such as photon propagation and localization, in disordered media.

中文翻译：

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随机光纤激光器中的光学杂散波

著名的光学流氓波 (RW) 演示是揭示不同激光场景中基本物理的强大工具，为时间统计开辟了繁荣时期。随机光纤激光器（RFL）因其在多学科演示和应用前景方面的巨大潜力而​​同样引起了广泛关注。然而，由于独特的无腔结构，在 RFL 中实现时间局部 RW 是一项科学挑战，其反馈来自无序介质中的多次散射。在这里，我们首次报告了对非相干泵浦 RFL 的高度偏斜、瞬态强度中 RW 的探索，据我们所知，并成功地展开了所涉及的动力学。相应的频域测量表明，RW 事件源于具有内在随机性的关键持续受激布里渊散射过程。这项研究突出了一种完全理解复杂物理的新途径，例如无序介质中的光子传播和定位。