Nested-ring Tm-doped high-power widely tunable fiber laser
Nested-ring Tm-doped high-power widely tunable fiber laser
A structured thulium-doped nested-ring active fiber was used to build a widely tunable high-power fiber laser. The nested-ring fiber allows high-power cladding pumping along with enhanced thermal management, improvement in the efficiency of the two-for-one process, and enabling single-mode operation. The straightforward tunable cavity design permits remote tuning while ensuring full enclosure of free-space optics and purification with nitrogen to mitigate the effects of water vapor absorption on the lasing process. Our study introduces a tunable Tm-fiber laser capable of emitting in the 1930 to 2090 nm range with a linewidth of 0.2 nm, delivering stable output power up to 70W.
2182-2186
Svejkar, Richard
e22194cd-6046-4f2f-b644-af922bec55c8
Buckthorpe, Martin P.
18af650a-3b3a-4830-9976-9f34062a487b
Shardlow, Peter C.
9ca17301-8ae7-4307-8bb9-371df461520c
Clarkson, W. Andrew
3b060f63-a303-4fa5-ad50-95f166df1ba2
8 September 2025
Svejkar, Richard
e22194cd-6046-4f2f-b644-af922bec55c8
Buckthorpe, Martin P.
18af650a-3b3a-4830-9976-9f34062a487b
Shardlow, Peter C.
9ca17301-8ae7-4307-8bb9-371df461520c
Clarkson, W. Andrew
3b060f63-a303-4fa5-ad50-95f166df1ba2
Svejkar, Richard, Buckthorpe, Martin P., Shardlow, Peter C. and Clarkson, W. Andrew
(2025)
Nested-ring Tm-doped high-power widely tunable fiber laser.
Journal of the Optical Society of America B, 42 (10), .
(doi:10.1364/josab.573697).
Abstract
A structured thulium-doped nested-ring active fiber was used to build a widely tunable high-power fiber laser. The nested-ring fiber allows high-power cladding pumping along with enhanced thermal management, improvement in the efficiency of the two-for-one process, and enabling single-mode operation. The straightforward tunable cavity design permits remote tuning while ensuring full enclosure of free-space optics and purification with nitrogen to mitigate the effects of water vapor absorption on the lasing process. Our study introduces a tunable Tm-fiber laser capable of emitting in the 1930 to 2090 nm range with a linewidth of 0.2 nm, delivering stable output power up to 70W.
Text
josab-42-10-2182
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Accepted/In Press date: 19 August 2025
e-pub ahead of print date: 20 August 2025
Published date: 8 September 2025
Identifiers
Local EPrints ID: 505396
URI: http://eprints.soton.ac.uk/id/eprint/505396
ISSN: 0740-3224
PURE UUID: 1486677e-94b8-485b-92c3-dd7c78fdceca
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Date deposited: 07 Oct 2025 17:01
Last modified: 08 Oct 2025 02:09
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