高功率侧面抽运耦合器及其应用研究  

High-Power Side-Pump Coupler and Its Applications

作　　者：谭祺瑞[1] 葛廷武[1] 董繁龙[1] 张雪霞[1] 王智勇[1] 

机构地区：[1]北京工业大学激光工程研究院,北京100124

出　　处：《中国激光》2015年第1期46-50,共5页Chinese Journal of Lasers

基　　金：工业用高功率全光纤激光器的开发(2010ZX04013-052)

摘　　要：抽运耦合器是高功率光纤激光器的关键无源光器件,可以将多路抽运光高效率地耦合进双包层光纤中,从而为光纤激光器提供所需的抽运功率,所以抽运耦合器是研制高功率光纤激光器首先要解决的问题。采用氢氧焰熔接方法,研制了一种高功率侧面抽运耦合器,在最大抽运功率为100 W时,耦合效率94%,信号光插入损耗0.15 d B,附加损耗0.2 d B,主光纤分光比99%,方向性22.5 d B。利用该耦合器搭建了百瓦级光纤激光器,当总抽运功率为185 W时,在1080 nm处获得的激光输出为103 W,光-光转换效率为56%。该高功率侧面抽运耦合器可用于输出功率为百瓦级和千瓦级的高功率光纤激光器。Pump coupler is the key passive optical component for the high power fiber laser. Multiple pump lights are efficiently coupled into the double- clad fiber, the required pump power can be provided for the realization of high power fiber laser. Pump coupler is the first problem to be solved for the research of the high power fiber laser. A high power side- pump coupler is developed with the method of hydrogen- oxygen flame fusion, when the maximum pump power is 100 W, the coupling efficiency is 94% , the signal insertion loss is 0.15 dB, the additional loss is 0.2 dB, the splitting ratio of main fiber is 99%, and the directionality is 22.5 dB. A hundred-watts fiber laser with an output power of 103 W at 1080 nm is built when the maximum pump power is 185 W. Optical- optical conversion efficiency is 56% . The high power side-pump coupler can be used as the pump coupler of the hundred-watts, and even kilowatt high power fiber lasers.

关 键 词：激光器 耦合器 侧面抽运 高功率 光纤激光器 

分 类 号：TN245[电子电信—物理电子学]