采用粉末技术制备的掺铥大模场面积光纤激光器，斜率效率为50.4% 。

50.4% slope efficiency thulium-doped large-mode-area fiber laser fabricated by powder technology.

作者信息

Darwich Dia, Dauliat Romain, Jamier Raphaël, Benoit Aurélien, Auguste Jean-Louis, Grimm Stephan, Kobelke Jens, Schwuchow Anka, Schuster Kay, Roy Philippe

出版信息

Opt Lett. 2016 Jan 15;41(2):384-7. doi: 10.1364/OL.41.000384.

DOI:10.1364/OL.41.000384

PMID:26766720

Abstract

We report on a triple clad large-mode-area Tm-doped fiber laser with 18 μm core diameter manufactured for the first time by an alternative manufacturing process named REPUSIL. This reactive powder sinter material enables similar properties compared to conventional CVD-made fiber lasers, while offering the potential of producing larger and more uniform material. The fiber characterization in a laser configuration provides a slope efficiency of 47.7% at 20°C, and 50.4% at 0°C with 8 W output power, with a laser peak emission at 1970 nm. Finally, a beam quality near the diffraction-limit (M(x,y)2<1.1) is proved.

摘要

我们首次报道了一种采用名为REPUSIL的替代制造工艺制造的纤芯直径为18μm的三包层大模面积掺铥光纤激光器。这种反应性粉末烧结材料与传统化学气相沉积法制造的光纤激光器相比具有相似的性能，同时具有生产更大且更均匀材料的潜力。在激光配置下对该光纤进行的表征显示，在20°C时斜率效率为47.7%，在0°C且输出功率为8W时斜率效率为50.4%，激光峰值发射波长为1970nm。最后，证明了其光束质量接近衍射极限（M(x,y)2<1.1）。