综合分析了不同基质掺Yb3+光纤的材料特性,在改进的极限输出功率理论模型的基础上,对Yb3+掺杂的硅光纤、磷酸盐光纤、YAG晶体(或陶瓷)光纤以及蓝宝石光纤的单频极限输出功率特性进行了详细分析。计算结果表明,YAG晶体(或陶瓷)光纤和蓝宝石光纤单频极限输出功率可以达到10kW以上。分析了单模情况下的极限输出功率,结果表明YAG晶体(或陶瓷)光纤和蓝宝石光纤在单模情况下也有较大优势,目前的单频激光功率还有很大的提升空间。对于单频激光光纤材料而言,降低受激布里渊散射(SBS)增益系数、提高导热性能是提高极限输出功率的有效途径。 Based on the theoretical model of the improved limiting output power, the characteristics of Yb3 + -doped silicon fiber, phosphate fiber, YAG crystal (or ceramic) fiber and single-frequency limit of sapphire fiber were comprehensively analyzed. Output power characteristics were analyzed in detail. The calculation results show that YAG crystal (or ceramic) fiber and sapphire fiber single-frequency limit output power can reach more than 10kW. The results show that the YAG crystal (or ceramic) fiber and the sapphire fiber have more advantages in the single-mode case and there is still much room for improvement in the current single-frequency laser power. For single-frequency laser fiber materials, reducing stimulated Brillouin scattering (SBS) gain coefficient to improve the thermal conductivity is an effective way to improve the ultimate output power.