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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
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.
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.
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, Poland.

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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More information

Published date: 30 August 2005
Venue - Dates: SPIE Conference on Lasers and Applications, Poland, 2005-08-30
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 379736
URI: https://eprints.soton.ac.uk/id/eprint/379736
PURE UUID: e82102b0-f3cf-440b-afa4-86cae37f69a9
ORCID for J. Nilsson: ORCID iD orcid.org/0000-0003-1691-7959

Catalogue record

Date deposited: 29 Jul 2015 11:57
Last modified: 06 Jun 2018 12:55

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