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Proceedings Paper

Cladding-pumped nested-ring Tm fiber laser with 131 W single-mode output at 1907 nm (Conference Presentation)

Paper Abstract

Output power levels from 1907 nm Tm fiber laser sources are restricted by low lasing efficiency and challenging thermal management. Here we develop a novel fiber core structure where the Tm dopant material is confined to a ring within the larger undoped glass core. This evolution of dopant profiling has tripled the fiber device lengths and produced 131 W of 1907 nm emission with 64.5% absorbed slope efficiency. This, to the best of our knowledge, is the most efficient 1907 nm Tm fiber laser that has been demonstrated with the capability to perform beyond 100 W output power.

Paper Details

Date Published: 11 March 2020
Proc. SPIE 11260, Fiber Lasers XVII: Technology and Systems, 112600F (11 March 2020); doi: 10.1117/12.2544414
Show Author Affiliations
Matthew J. Barber, Univ. of Southampton (United Kingdom)
Peter C. Shardlow, Univ. of Southampton (United Kingdom)
Pranabesh Barua, Univ. of Southampton (United Kingdom)
Jayanta K Sahu, Univ. of Southampton (United Kingdom)
Andy Clarkson, 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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