用于10 kW级高光束质量激光输出的国产部分掺杂光纤

Homemade confined-doped fiber for 10 kW level fiber laser output with good beam quality

摘要: 当前光纤激光功率提升受限于模式不稳定效应及非线性效应，为了克服上述功率提升限制因素，自主设计并研制了大模场部分掺杂光纤。最终，采用自研部分掺杂光纤及后向级联泵浦方案，成功实现了10.1 kW的光纤激光输出，对应的光束质量因子(M²)为2.16。

Abstract: Power scaling of high-brightness fiber laser is limited by the mode instability and nonlinear effects. To overcome these limiting factors, a large mode area confined-doped fiber is designed and fabricated. By utilizing the homemade confined-doped fiber and backward tandem pumping scheme, fiber laser with output power of 10.1 kW is successfully achieved, where the corresponding beam quality factor （M²） is 2.16.