简要回顾了高功率光纤激光光谱合成的研究进展和现状,介绍了影响合成激光光束质量的外界因素,主要包括合成系统中的元器件及子光源阵列的线宽展宽。现有的理论、实验结果以及中国科学院上海光学精密机械研究所在光谱合成光束质量改进方面的最新研究进展,有助于优化设计光纤激光器光谱合成系统的内置参数,推动高亮度光谱合成技术的进一步发展。

The research progress and development status of spectral beam combining (SBC) using high-power fiber lasers is reviewed briefly, and a detailed introduction to the external factors that affect the beam quality is made. The influences of components in the SBC system and the linewidth broadening of the sub-light source array are mainly considered in the evaluation of beam quality. The summary of the existing theories and experimental results as well as the groundbreaking works for improving the beam quality of SBC in Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, is helpful to optimize the design of the built-in parameters of SBC and thus the further development of high-brightness SBC techniques is promoted.