掺Yb3+双包层光纤激光器的研究进展

光纤激光器以其独特的优势得到快速发展，其应用范围已经扩展到工业加工、国防军事、医疗等领域。综述了连续、脉冲掺Yb3+双包层光纤激光器的国内外研究进展，介绍了利用能承受高功率的合束器、光纤光栅的全光纤激光器，利用种子光主振荡光纤放大技术产生高光束质量、高平均功率、高峰值功率的脉冲光纤激光器。分析了影响光纤激光器功率提高的因素，如光纤的损伤、非线性性效应、热效应。最后，对掺Yb3+双包层光纤激光器的发展前景进行了展望。

Research progress of Yb-doped double-clad fiber lasers

Fiber lasers have grown rapidly for their unique advantages, which become very competitive in many applications such as industrial processing, defense and military, medical and other fields. The progress of continuous wave and pulse Yb-doped double-clad fiber laser at home and abroad was reported. All-fiber lasers with combiners and fiber gratings were introduced. Simultaneously, pulse fiber lasers with high beam quality, high average power and high peak power based on master oscillator fiber power amplifier technology were presented. The influencing factors of increasing power of fiber laser, including damage of the optical fiber, nonlinear effects, thermal effects, were analyzed. Finally, the development trends of the Yb-doped double-clad fiber lasers were predicated.