1.1-kW Ytterbium Monolithic Fiber Laser With Assembled End-Pump Scheme to Couple High Brightness Single Emitters
1.1-kW Ytterbium Monolithic Fiber Laser With Assembled End-Pump Scheme to Couple High Brightness Single Emitters
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DOI：
10.1109/lpt.2011.2123879
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发表时间：
2011-06
影响因子：
2.6
通讯作者：
P. Yan;S. Yin;J. He;Ch Fu;Yaping Wang;M. Gong
中科院分区：
文献类型：
--
作者：
P. Yan;S. Yin;J. He;Ch Fu;Yaping Wang;M. Gong
介绍了一种采用主振荡器和两级功率放大结构的连续波全光纤激光器。采用单射极二极管泵浦技术，具有成本低、散热效果好等优点。采用组装式端面泵浦方案将高亮度泵浦功率耦合到增益光纤中。该激光系统在1085 nm处产生了1.1kW的输出功率，总光光效率约为66.5%，相当于1655W的泵浦功率。考虑到单发射体的发射光谱特性，分析了增益光纤的可变吸收特性，这对泵浦系统的构建具有重要意义。
We demonstrate a continuous-wave all-fiber laser with master oscillator and two-stage power amplifier configuration. Diode pumping with single-emitter technology is used with the advantage of low cost and outstanding heat management. An assembled end-pumped scheme is employed to couple high brightness pump power into a gain fiber. The laser system generates 1.1-kW output power at 1085 nm, with the total optical-optical efficiency of about 66.5%, corresponding to 1655 W of applied pump power. The variable absorption of gain fiber is analyzed considering the launching spectra characteristics of single emitters, which is significant for the construction of the pump system.