Stimulated Raman scattering (SRS) enabled by the emerging gas-filled low-loss anti-resonant hollow-core fiber (ARHCF) technology opens up a competitive way towards the development of novel lasers in the molecular fingerprint region. In this article, the characteristics of noise and long-term stability of near- and mid-infrared (near-IR and mid-IR) gas-filled fiber Raman lasers have been investigated for the first time. The results reveal that an increase in Raman pulse energy is associated with a decrease in noise, and that the relative pulse peak intensity noise (RIN) is always lower than the relative pulse energy noise (REN). We also demonstrate that long-term drift of the pulse energy and peak power are directly linked with the high amount of heat release during the Raman Stokes generation. The demonstrated noise and long-term stability performance provide necessary references for potential spectroscopic applications as well as further improvements of the emerging IR gas-filled ARHCF Raman laser technology.

中文翻译：

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近红外和中红外充气光纤拉曼激光器的噪声性能和长期稳定性

由新兴的充气低损耗反谐振空心光纤 (ARHCF) 技术实现的受激拉曼散射 (SRS) 为分子指纹区域新型激光器的开发开辟了一条有竞争力的道路。本文首次研究了近红外和中红外（近红外和中红外）充气光纤拉曼激光器的噪声特性和长期稳定性。结果表明，拉曼脉冲能量的增加与噪声的降低有关，并且相对脉冲峰值强度噪声 (RIN) 始终低于相对脉冲能量噪声 (REN)。我们还证明，脉冲能量和峰值功率的长期漂移与拉曼斯托克斯产生期间的大量热量释放直接相关。