飞秒光纤激光在社会生产、基础科学研究等领域有广泛的应用前景。然而,受限于光纤内的非线性效应、光纤损伤、模式不稳定性等因素,单路功率或能量提升空间有限。近年来,飞秒光纤激光相干合成技术成为国际上的研究热点,特别是国际相干快印网络(ICAN)项目的支持和推动,相关研究如火如荼,各种合成技术不断涌现。目前,德国耶拿弗里德里希·席勒大学基于相干偏振的合成技术已实现平均功率为530 W的 Femtosecond fiber laser in the social production, basic scientific research and other fields have a wide range of applications. However, limited by the non-linear effects within the fiber, fiber damage, mode instability and other factors, there is limited room for single power or energy improvement. In recent years, the femtosecond fiber laser coherent synthesis technology has become an international research hot spot, especially the support and promotion of the International Coherent Fast Printing Network (ICAN) project. Relevant researches are in full swing and various synthesis technologies are emerging constantly. At present, the synthetic technique based on coherent polarization of the Jena Friedrich Schiller University in Germany has achieved an average power of 530 W