All-fiber core-pumped Ho-doped laser with 95 W output power and high efficiency
All-fiber core-pumped Ho-doped laser with 95 W output power and high efficiency
We report a core-pumped, all-fiber, monolithic holmium-doped silica fiber laser (HDFL) pumped at 1940 nm by a high-power Tm-doped fiber laser. The system delivers up to 95 W of continuous-wave output power at 2109 nm, representing one of the highest reported powers for a core-pumped holmium fiber laser. A slope efficiency of 84% with respect to launched pump power is achieved, making a 10% improvement over previously published papers. These results confirm the effectiveness of core pumping using advanced Tm-doped fiber architectures and highlight the potential of compact, efficient Ho-doped fiber sources for high-power applications in the 2.1 µm spectral region. All experiments were further supported by numerical modelling together with a simulation of possible further power-scaling up to 250 W.
10971-10977
Švejkar, Richard
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Svejkarova, Bara
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Kamrádek, Michal
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Aubrecht, Jan
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Peterka, Pavel
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Clarkson, W. Andrew
13751018-39c1-4246-81dc-6184a8ada382
23 March 2026
Švejkar, Richard
e22194cd-6046-4f2f-b644-af922bec55c8
Svejkarova, Bara
6438556a-5de1-40cf-a56c-1fa791a690bc
Kamrádek, Michal
27dd3eda-3d93-4237-a637-8e8e3f1b9416
Aubrecht, Jan
d03efa7e-a85c-4eb0-a23f-7c5a39127dec
Peterka, Pavel
6b5f168e-984a-4d6d-825d-458210fb2ed8
Clarkson, W. Andrew
13751018-39c1-4246-81dc-6184a8ada382
Švejkar, Richard, Svejkarova, Bara, Kamrádek, Michal, Aubrecht, Jan, Peterka, Pavel and Clarkson, W. Andrew
(2026)
All-fiber core-pumped Ho-doped laser with 95 W output power and high efficiency.
Optics Express, 34 (6), .
(doi:10.1364/OE.589906).
Abstract
We report a core-pumped, all-fiber, monolithic holmium-doped silica fiber laser (HDFL) pumped at 1940 nm by a high-power Tm-doped fiber laser. The system delivers up to 95 W of continuous-wave output power at 2109 nm, representing one of the highest reported powers for a core-pumped holmium fiber laser. A slope efficiency of 84% with respect to launched pump power is achieved, making a 10% improvement over previously published papers. These results confirm the effectiveness of core pumping using advanced Tm-doped fiber architectures and highlight the potential of compact, efficient Ho-doped fiber sources for high-power applications in the 2.1 µm spectral region. All experiments were further supported by numerical modelling together with a simulation of possible further power-scaling up to 250 W.
Text
oe-34-6-10971
- Accepted Manuscript
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Accepted/In Press date: 8 March 2026
Published date: 23 March 2026
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© 2026 Optica Publishing Group (formerly OSA). All rights reserved.
Identifiers
Local EPrints ID: 510643
URI: http://eprints.soton.ac.uk/id/eprint/510643
ISSN: 1094-4087
PURE UUID: ed59a241-05ba-492d-878b-0081decfdfa5
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Date deposited: 14 Apr 2026 16:57
Last modified: 14 Apr 2026 16:57
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Contributors
Author:
Richard Švejkar
Author:
Bara Svejkarova
Author:
Michal Kamrádek
Author:
Jan Aubrecht
Author:
Pavel Peterka
Author:
W. Andrew Clarkson
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