Power scaling of cladding-pumped Er, Yb-doped fiber lasers at 1.5µm
Power scaling of cladding-pumped Er, Yb-doped fiber lasers at 1.5µm
An efficient double-clad erbium-ytterbium co-doped fiber laser pumped by two high-power diode-stacks at 975nm is reported. Using a simple external cavity configuration at one end of the fiber and the 3.6% Fresnel reflection from a cleaved fiber end facet at the opposite end of the fiber to provide the necessary feedback for lasing, we obtained a maximum output power of 159W at 1565nm in a beam with beam quality factor (M2) similar to 1.9 for 466W of launched pump power. The corresponding slope efficiency with respect to launched pump power was 34%. The maximum output power was limited by the available pump power. A strategy for increasing the output power and improving the beam quality based on the use of a double-clad fiber design with a helical-core trajectory is considered.
Clarkson, W.A.
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Shen, D.
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Wang, P.
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Cooper, L.J.
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Nilsson, J.
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Sahu, J.K.
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30 August 2005
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
Shen, D.
9825d684-fc47-4684-979a-44dbe2ac4780
Wang, P.
df957848-e6e4-45f0-ba01-2d966a30aa67
Cooper, L.J.
249c1748-92f2-42aa-9cbc-0e4f5dcc3bf9
Nilsson, J.
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Clarkson, W.A., Shen, D., Wang, P., Cooper, L.J., Nilsson, J. and Sahu, J.K.
(2005)
Power scaling of cladding-pumped Er, Yb-doped fiber lasers at 1.5µm.
SPIE Conference on Lasers and Applications, Warsaw, Poland.
(doi:10.1117/12.623660).
Record type:
Conference or Workshop Item
(Paper)
Abstract
An efficient double-clad erbium-ytterbium co-doped fiber laser pumped by two high-power diode-stacks at 975nm is reported. Using a simple external cavity configuration at one end of the fiber and the 3.6% Fresnel reflection from a cleaved fiber end facet at the opposite end of the fiber to provide the necessary feedback for lasing, we obtained a maximum output power of 159W at 1565nm in a beam with beam quality factor (M2) similar to 1.9 for 466W of launched pump power. The corresponding slope efficiency with respect to launched pump power was 34%. The maximum output power was limited by the available pump power. A strategy for increasing the output power and improving the beam quality based on the use of a double-clad fiber design with a helical-core trajectory is considered.
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Published date: 30 August 2005
Venue - Dates:
SPIE Conference on Lasers and Applications, Warsaw, Poland, 2005-08-30
Organisations:
Optoelectronics Research Centre
Identifiers
Local EPrints ID: 379736
URI: http://eprints.soton.ac.uk/id/eprint/379736
PURE UUID: e82102b0-f3cf-440b-afa4-86cae37f69a9
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Date deposited: 29 Jul 2015 11:57
Last modified: 15 Mar 2024 03:09
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Contributors
Author:
W.A. Clarkson
Author:
D. Shen
Author:
P. Wang
Author:
L.J. Cooper
Author:
J. Nilsson
Author:
J.K. Sahu
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