瓦级双包层光纤超荧光光源的实验研究  

Experimental Research on Watts Double Clad Fiber Superfluorescent Source

作　　者：孔令峰[1] 楼祺洪[1] 周军[1] 薛冬[1] 董景星[1] 魏运荣[1] 

机构地区：[1]中国科学院上海光学精密机械研究所

出　　处：《中国激光》2005年第6期757-760,共4页Chinese Journal of Lasers

基　　金：中国科学院知识创新工程;国家自然科学基金(60244005);上海市光科技专项(036105034)资助项目。

摘　　要：采用大功率半导体激光器抽运25m掺Yb双包层光纤,在单程装置中,前向(SPF)和后向(SPB)分别获得了1.46W和1.82W最大超荧光功率,斜度效率分别为23.4%和29.2%,3dB带宽最大为11nm。采用特定范围波长双色镜作为前腔镜,形成双程前向(DPF)装置,获得最大超荧光输出功率2.12W,此时斜度效率为43.2%,中心波长在1070nm,输出光谱平坦性较好,3dB带宽从单程的11nm提高到42nm。The experimental results using two different configuration on high-power Yb-doped double-cladding fiber superfluorescent source (SFS) pumped by 975 nm laser diode are reported. In single-pass forward (SPF) and single-pass backward (SPB) design, the maximum superfluorescent output power is 1.46 W and 1.82 W, while the slope efficiency is 23.4% and 29.2% respectively. In double-pass forward (DPF) configuration using the dichroic mirror as the front cavity mirror, the maximum superfluorescent output power is 2.12 W with the slope efficiency of 43.2%. And central wavelength of superfluorescent spectrum is 1070 nm, the flatness of output SFS spectrum is greatly improved with the 3 dB bandwidth from 11 nm to 42 nm.

关 键 词：激光技术 双包层光纤 超荧光 双色镜 

分 类 号：TN245[电子电信—物理电子学]