【作者】 王琳； 延凤平； 魏淮； 傅永军； 郑凯； 毛向桥； 李坚； 刘利松； 彭健； 简水生；

【Author】 WANG Lin, YAN Feng-ping, WEI Huai, FU Yong-jun, ZHENG Kai, MAO Xiang-qiao, LI Jian, LIU Li-song, PENG Jian, JIAN Shui-sheng (Key-Laboratory of All-Optical networks & Modern Communications Networks, Ministry of Education, China, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China)

【机构】 全光网络与现代通信网教育部重点实验室,北京交通大学光波技术研究所；

【摘要】 基于实验测试结果分析了用于大功率光纤激光器的石英基包层泵浦掺Yb³⁺光纤中Al³⁺共掺的特性,揭示出为了减小Yb³⁺的浓度猝灭,Al³⁺的掺入量为Yb³⁺的7-8倍为最佳参数,在获得高吸收系数的同时还可更好的满足数值孔径的要求。同时,通过疏松层温度实验获得的相关参数表明,疏松层的最佳温度应控制在1440¹480℃之间,此范围内的吸收系数均高达550-620dB/m,且重复性较好。这些结论为共掺Al³⁺的掺Yb³⁺光纤制作有很好的参考作用。更多还原

【Abstract】 The characteristics of co-doping Al3+ on Ytterbium-Doped Silica-Based Fiber used for high-power laser were analyzed based on experiment tests. The results show that the optimum ratio of Al3+/Yb3+ is 7-8, both of high absorption coefficient and proper numerical aperture can be obtained. Meanwhile, temperature range of making porous layer was derived from porous layer experiment and several performs were fabricated. The results show that the optimum temperature of making porous layer should between 1440℃ and 1480℃ where the absorption coefficients were as high as 550-620dB/m with better repetition. The conclusions above are good reference on fabrication of ytterbium-doped Al3+ co-doped fiber.更多还原