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

Matthew J. Barber; Peter C. Shardlow; Pranabesh Barua; Jayanta K Sahu; Andy Clarkson

doi:10.1117/12.2544414

11 March 2020 Cladding-pumped nested-ring Tm fiber laser with 131 W single-mode output at 1907 nm (Conference Presentation)

Matthew J. Barber, Peter C. Shardlow, Pranabesh Barua, Jayanta K Sahu, Andy Clarkson

Author Affiliations +

Proceedings Volume 11260, Fiber Lasers XVII: Technology and Systems; 112600F (2020) https://doi.org/10.1117/12.2544414
Event: SPIE LASE, 2020, San Francisco, California, United States

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.

Conference Presentation

Citation Download Citation

Matthew J. Barber, Peter C. Shardlow, Pranabesh Barua, Jayanta K Sahu, and Andy Clarkson "Cladding-pumped nested-ring Tm fiber laser with 131 W single-mode output at 1907 nm (Conference Presentation)", Proc. SPIE 11260, Fiber Lasers XVII: Technology and Systems, 112600F (11 March 2020); https://doi.org/10.1117/12.2544414

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