A 2.14 kW tandem pumped fiber amplifier
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摘要: 利用大模场掺镱光纤搭建了1018 nm高功率光纤激光器,获得了476 W的最高输出功率。利用6台高亮度1018 nm光纤激光器泵浦掺镱光纤,搭建了全光纤结构的级联泵浦光纤放大器,实现了2.14 kW的最高输出功率,输出功率随泵浦功率线性增长,整体斜率效率为86.9%,M2因子为1.9。Abstract: A 476 W 1018 nm ytterbium fiber laser has been demonstrated employing large mode area fiber. A high power ytterbium doped fiber amplifier pumped by 6 high brightness 1018 nm fiber lasers is constructed. The maximum output power is 2140 W, with a slope efficiency as high as 86.9%. The beam quality M2 factor is measured to be 1.9. Further power scaling is very probable if more powerful pump sources are provided.
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Key words:
- fiber amplifier /
- cascaded pump /
- high power /
- conversion efficiency /
- stimulated Raman scattering
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