In this paper, a cladding-pumped erbium-ytterbium co-doped random fiber laser (EYRFL) operating at 1550 nm with high power laser diode (LD) is proposed and experimentally demonstrated for the first time. The laser cavity includes a 5-m-long erbium-ytterbium co-doped fiber that serves as the gain medium, as well as a 2-km-long single-mode fiber (SMF) to provide random distributed feedback. As a result, stable 2.14 W of 1550nm random lasing at 9.80 W of 976 nm LD pump power and a linear output with the slope efficiency as 22.7% are generated. This simple and novel random fiber laser could provide a promising way to develop high power 1.5 µm light sources.

中文翻译：

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基于掺-掺Co光纤的LD泵浦随机光纤激光器

本文提出了一种在1550 nm下与高功率激光二极管（LD）一起工作的包层泵浦-co共掺杂随机光纤激光器（EYRFL），并首次进行了实验验证。激光腔包括用作增益介质的5米长的掺-掺co光纤，以及2公里长的提供随机分布反馈的单模光纤（SMF）。结果，在9.80 W的976 nm LD泵浦功率下产生了稳定的1550 nm随机激光的2.14 W和1550nm的激光，并且产生了斜率为22.7％的线性输出。这种简单新颖的随机光纤激光器可以为开发高功率1.5 µm光源提供有希望的方法。