高功率光纤端帽实现6kW激光输出  

High power fiber end-cap with 6kW output power

作　　者：周旋风[1] 陈子伦[1] 侯静[1] 王泽锋[1] 许晓军[1] 

机构地区：[1]国防科学技术大学光电科学与工程学院,长沙410073

出　　处：《强激光与粒子束》2015年第12期1-2,共2页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(61370045;11274385)

摘　　要：高功率光纤端帽是kW级光纤激光器必不可少的器件,而实现光纤端帽的低损耗高强度熔接是其关键技术。由于光纤和大尺寸光纤端帽在直径上的巨大差异,二者的熔接不能通过传统熔接机实现。设计并搭建了光纤端帽熔接系统,掌握了多种尺寸的光纤端帽的熔接工艺,成功用于光纤激光器及光纤合束器的高功率输出。实验上利用单模光端帽实现了3.01kW的激光输出,在未进行主动制冷的情况下温升为7℃/kW。利用多模光纤端帽实现了6.08kW的激光输出,在未进行主动制冷的情况下温升为6℃/kW。High power fiber end-cap is an essential component for kW-level fiber lasers, the key technique of which is thesplicing of fiber end-caps with low loss and high tension strength. Due to the huge difference of the diameters of fiber and large-size end-cap, the splicing of them cannot be realized by traditional fusion splicers. A fiber end-cap splicing system is designed andbuilt. The splicing art is implemented for different size end-caps with good tension strength. Output power with 3.01 kW is real-ized with a single-mode fiber end-cap while only heating up by 7℃/kW without active cooling. Output power with 6.08 kW is re-alized with a multi-mode fiber end-cap while only heating up by 6 ℃/kW without active cooling.

关 键 词：光纤激光器 光纤熔接 光纤端帽 

分 类 号：TN248[电子电信—物理电子学]