高功率全光纤(2+1)×1侧面抽运合束器的研制  

Development of High Power All-Fiber(2+1)×1 Side-Pumped Combiner

作　　者：雷成敏[1] 陈子伦[1,2,3] 冷进勇[1,2,3] 谷炎然 侯静[1,2,3] 

机构地区：[1]国防科学技术大学光电科学与工程学院,湖南长沙410073 [2]高能激光技术湖南省重点实验室,湖南长沙410073 [3]大功率光纤激光湖南省协同创新中心,湖南长沙410073

出　　处：《中国激光》2017年第5期8-12,共5页Chinese Journal of Lasers

基　　金：国家自然科学基金(61370045)

摘　　要：基于拉锥-熔合法研制了一种高功率全光纤(2+1)×1侧面抽运合束器。利用仿真软件建立理论模型,计算了合束器耦合效率,并制备出这种侧面抽运合束器。经测试,该合束器在抽运功率为600 W时,两抽运臂的耦合效率分别为98.2%和96.3%,信号光插入损耗约为0.11dB。利用该合束器搭建了千瓦级光纤激光放大器,双向抽运光功率达到1.8kW时,在1080nm处获得的激光输出功率为1.426kW。A high power all-fiber （2＋ 1） × 1 side-pumped combiner based on tapered-fused method is developed. The theoretical model of the combiner is set up through simulation software, and the coupling efficiency of combiner is calculated. A side-pumped combiner is fabricated. The coupling efficiencies are 98.2% and 96.3% for two pump arms respectively at the pump power of 600 W, and the insertion loss of signal light is about 0.11 dB. The combiner is applied to construct a kilowatt-class fiber laser amplifier. The output power is 1. 426 kW at 1080 nm, when the power of bidirectional pumping light reaches 1.8 kW.

关 键 词：激光物理 光纤合束器 光纤激光器 侧面抽运 光纤拉锥 

分 类 号：TN248[电子电信—物理电子学]