实验报道了一种新型的高功率宽带掺Yb^3+双包层光子晶体光纤(DC-PCF)超荧光光源(SFS)。利用端面耦合技术直接将高功率激光二极管激光器(LD,中心波长为976nm)输出的泵浦光耦合进掺Yb^3+ DC-PCF。采用双程前向泵浦方式获得了平坦的宽带超荧光输出,最大超荧光输出功率1.649W,斜率效率为56.7%,3dB带宽为22.4nm。
A new kind of high-power broadband Yb^3+- doped double-cladding photonic crystal fiber (DC-PCF) superfluorescent source (SFS) is reported experimentally, which is pumped at 976 nm by a high-power lasers diode(LD) with the end-coupling method. We get the smooth broadband superfluorescence. The maximum superfluorescent output power is 1. 649 W with a slope efficiencv of 56.7 %. The 3 dB bandwidth is 22.4 nm.