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Proceedings Paper

47-W 1726-nm operation of a thulium fiber laser pumped in-band by an erbium-only fiber laser (Conference Presentation)

Paper Abstract

A route to high power continuous-wave generation around 1.7 µm has been explored using an Er-only doped LMA fiber laser for high brightness core pumping of a thulium-doped fiber laser (TDFL). The maximum output power of 47 W with a slope efficiency of 80% was achieved at 1726 nm which, to the author’s best knowledge, is the highest recorded power in this wavelength region from a TDFL. The motivation for an Er-only pump source is scalability; these results show that this configuration has significant potential for further power scaling towards hundred-watt class systems at 1.7 µm and beyond.

Paper Details

Date Published: 11 March 2020
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Proc. SPIE 11260, Fiber Lasers XVII: Technology and Systems, 112600G (11 March 2020); doi: 10.1117/12.2544933
Show Author Affiliations
Mark D. Burns, Optoelectronics Research Ctr. (United Kingdom)
Univ. of Southampton (United Kingdom)
Peter C. Shardlow, Optoelectronics Research Ctr. (United Kingdom)
Univ. of Southampton (United Kingdom)
Pranabesh Barua, Optoelectronics Research Ctr. (United Kingdom)
Univ. of Southampton (United Kingdom)
Thomas L. Jefferson-Brain, Optoelectronics Research Ctr. (United Kingdom)
Univ. of Southampton (United Kingdom)
Jayanta K. Sahu, Optoelectronics Research Ctr. (United Kingdom)
Univ. of Southampton (United Kingdom)
William A. Clarkson, Optoelectronics Research Ctr. (United Kingdom)
Univ. of Southampton (United Kingdom)


Published in SPIE Proceedings Vol. 11260:
Fiber Lasers XVII: Technology and Systems
Liang Dong, Editor(s)

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