Egorova O N, Semjonov S L, Velmiskin V V, Yatsenko Yu P, Sverchkov S E, Galagan B I, Denker B I, Dianov E M
Opt Express. 2014 Apr 7;22(7):7632-7. doi: 10.1364/OE.22.007632.
We present a composite optical fiber with a Er/Yb co-doped phosphate-glass core in a silica glass cladding as well as cladding pumped laser. The fabrication process, optical properties, and lasing parameters are described. The slope efficiency under 980 nm cladding pumping reached 39% with respect to the absorbed pump power and 28% with respect to the coupled pump power. Due to high doping level of the phosphate core optimal length was several times shorter than that of silica core fibers.
我们展示了一种复合光纤，其纤芯为铒/镱共掺杂磷酸盐玻璃，包层为石英玻璃，以及包层泵浦激光器。描述了其制造工艺、光学特性和激光参数。在980nm包层泵浦下，相对于吸收的泵浦功率，斜率效率达到39%，相对于耦合的泵浦功率，斜率效率达到28%。由于磷酸盐纤芯的高掺杂水平，最佳长度比石英纤芯光纤的最佳长度短几倍。
