47 W continuous-wave 1726 nm thulium fiber laser core-pumped by an erbium fiber laser.
47 W continuous-wave 1726 nm thulium fiber laser core-pumped by an erbium fiber laser.
复制标题
DOI：
10.1364/ol.44.005230
复制
发表时间：
2019-11
期刊：
影响因子：
3.6
通讯作者：
M. D. Burns;P. Shardlow;P. Barua;T. L. Jefferson-Brain;Jayanta K. Sahu;W. Clarkson
中科院分区：
文献类型：
--
作者：
M. D. Burns;P. Shardlow;P. Barua;T. L. Jefferson-Brain;Jayanta K. Sahu;W. Clarkson
已在芯抽运单片（全光纤）谐振器配置中演示了1726 nm掺铥石英光纤激光器的高功率、短波长工作，该谐振器由工作在1580 nm的高功率纯铒光纤激光器带内抽运。在吸收泵浦功率为60 W时，输出功率为47 W。相对于80%的吸收泵浦功率，相应的斜率效率与91.5%的理论最大（斯托克斯）效率相比是有利的。考虑了在此波长范围内进一步将单模功率缩放到>100 W的前景，以及在此难以到达的波长带中操作的高功率激光器的潜在应用。
The high-power, short-wavelength operation of a thulium-doped silica fiber laser at 1726 nm has been demonstrated in a core-pumped monolithic (all-fiber) resonator configuration, in-band pumped by a high-power erbium-only fiber laser operating at 1580 nm. The thulium fiber laser yielded 47 W in a single-spatial-mode output beam for 60-W absorbed pump power. The corresponding slope efficiency, with respect to an absorbed pump power of 80%, compares favorably with the theoretical maximum (Stokes) efficiency of 91.5%. The prospects for further scaling of single-mode power in this wavelength regime to >100 W are considered, as well as the potential applications for high-power lasers operating in this difficult-to-reach wavelength band.