Chen Maoni, Cao Jianqiu, Zhang Qi, Liu Aimin, Zhou Shangde, Huang Zhihe, Wang Zefeng, Chen Jinbao
Opt Express. 2024 Apr 8;32(8):13111-13118. doi: 10.1364/OE.517764.
In this paper, a hundred-watt-level near-diffraction-limited step-index Yb-doped fiber (YDF) laser near 980 nm is demonstrated firstly, to the best of our knowledge. By using the 11.7-W 979-nm single-mode seed light, the in-band amplified spontaneous emission (ASE) is well suppressed and the maximum output power of 101.5 W with the beam quality (M factor) of 1.285 was obtained. This work does not only propose an effective method for the suppression of in-band ASE, but also provides a cost-effective solution of hundred-Watt-level near-diffraction-limited fiber lasers near 980 nm.
据我们所知，本文首次展示了一种近980nm的百瓦级近衍射极限阶跃折射率掺镱光纤（YDF）激光器。通过使用11.7W的979nm单模种子光，带内放大自发辐射（ASE）得到了很好的抑制，获得了101.5W的最大输出功率，光束质量（M因子）为1.285。这项工作不仅提出了一种抑制带内ASE的有效方法，还为980nm附近的百瓦级近衍射极限光纤激光器提供了一种经济高效的解决方案。
