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在实验室条件下,采用单程后向超荧光实验结构,利用波长为980nm的半导体激光器以光纤端对端方式直接抽运自制的掺Er3+碲酸盐短光纤,成功获得了宽带宽的超荧光。3dB带宽为60nm,中心波长为1545nm,所需光纤长度仅为6.5cm。同时,基于单程后向结构,超荧光的平均波长具有不依赖泵浦功率的稳定性,我们对光纤的长度进行了优化,对超荧光的谱宽特性及其随光纤长度变化的特性作了实验分析。
Under laboratory conditions, a one-way backward hyperfluorescence experiment was used to fabricate a wide-band superfluorescence by using a semiconductor laser with a wavelength of 980 nm to directly pump home-made Er3 + -doped tellurite fibers in end-to-end manner. 3dB bandwidth of 60nm, the center wavelength of 1545nm, the required fiber length of only 6.5cm. At the same time, based on the one-way backward structure, the average wavelength of superfluorescence has the stability independent of the pump power. We optimized the length of the fiber, and experimented on the spectral characteristics of the superfluorescence and the characteristics of the superfluorescence with the length of the fiber analysis.