Efficient single-mode operation of a cladding-pumped ytterbium-doped helical-core fiber laser
Efficient single-mode operation of a cladding-pumped ytterbium-doped helical-core fiber laser
A novel approach to achieving robust single-spatial-mode operation of cladding-pumped fiber lasers with multimode cores is reported. The approach is based on the use of a fiber geometry in which the core has a helical trajectory within the inner cladding to suppress laser oscillation on higher-order modes. In a preliminary proof-of-principle study, efficient single-mode operation of a cladding-pumped ytterbium-doped helical-core fiber laser with a 30µm diameter core and a numerical aperture of 0.087 has been demonstrated.
The laser yielded 60.4 W of output at 1043 nm in a beam with M2<1.4 for 92.6 W launched pump power from a diode stack at 976 nm. The slope efficiency at pump powers well above threshold was 84%, which compares favorably with the slope efficiencies achievable with conventional straight-core Yb-doped double-clad fiber lasers.
lasers and laser optics, diode-pumped, fiber, single-mode
226-228
Wang, P.
df957848-e6e4-45f0-ba01-2d966a30aa67
Cooper, L.J.
249c1748-92f2-42aa-9cbc-0e4f5dcc3bf9
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
15 January 2006
Wang, P.
df957848-e6e4-45f0-ba01-2d966a30aa67
Cooper, L.J.
249c1748-92f2-42aa-9cbc-0e4f5dcc3bf9
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
Wang, P., Cooper, L.J., Sahu, J.K. and Clarkson, W.A.
(2006)
Efficient single-mode operation of a cladding-pumped ytterbium-doped helical-core fiber laser.
Optics Letters, 31 (2), .
(doi:10.1364/OL.31.000226).
Abstract
A novel approach to achieving robust single-spatial-mode operation of cladding-pumped fiber lasers with multimode cores is reported. The approach is based on the use of a fiber geometry in which the core has a helical trajectory within the inner cladding to suppress laser oscillation on higher-order modes. In a preliminary proof-of-principle study, efficient single-mode operation of a cladding-pumped ytterbium-doped helical-core fiber laser with a 30µm diameter core and a numerical aperture of 0.087 has been demonstrated.
The laser yielded 60.4 W of output at 1043 nm in a beam with M2<1.4 for 92.6 W launched pump power from a diode stack at 976 nm. The slope efficiency at pump powers well above threshold was 84%, which compares favorably with the slope efficiencies achievable with conventional straight-core Yb-doped double-clad fiber lasers.
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Published date: 15 January 2006
Keywords:
lasers and laser optics, diode-pumped, fiber, single-mode
Identifiers
Local EPrints ID: 39303
URI: http://eprints.soton.ac.uk/id/eprint/39303
ISSN: 0146-9592
PURE UUID: 011d1896-1c09-44c8-b6c4-d535788cebcf
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Date deposited: 27 Jun 2006
Last modified: 16 Mar 2024 03:20
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Contributors
Author:
P. Wang
Author:
L.J. Cooper
Author:
J.K. Sahu
Author:
W.A. Clarkson
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