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Power scaling concepts for fiber lasers

Power scaling concepts for fiber lasers
Power scaling concepts for fiber lasers
The use of a two-mirror beam shaper to re-format the output from a diode-stack to allow efficient cladding-pumping of fiber lasers is described. In addition, the use of a helical-core geometry to suppress oscillation on higher-order modes in large-core double-clad fiber lasers is discussed. In preliminary experiments we have obtained ~90W of output in a beam with M2 ~ 5 from a conventional straight-core Yb-doped double-clad fiber with V=11 for ~150W of launched pump power at ~938nm from a beam-shaped diode-stack, and ~ 24.3W of output in a beam with M2 ~ 3 from a Yb-doped helical-core fiber for ~50W of launched pump power. The prospects for further improvement in performance and beam quality are considered.
261-267
Optical Society of America
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
Cooper, L.J.
249c1748-92f2-42aa-9cbc-0e4f5dcc3bf9
Wang, P.
df957848-e6e4-45f0-ba01-2d966a30aa67
Williams, R.B.
1d172577-abdb-4589-8ded-153cf6732c20
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
Cooper, L.J.
249c1748-92f2-42aa-9cbc-0e4f5dcc3bf9
Wang, P.
df957848-e6e4-45f0-ba01-2d966a30aa67
Williams, R.B.
1d172577-abdb-4589-8ded-153cf6732c20
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2

Clarkson, W.A., Cooper, L.J., Wang, P., Williams, R.B. and Sahu, J.K. (2003) Power scaling concepts for fiber lasers. In, OSA Trends in Optics and Photonics Series. Washington DC, USA. Optical Society of America, pp. 261-267.

Record type: Book Section

Abstract

The use of a two-mirror beam shaper to re-format the output from a diode-stack to allow efficient cladding-pumping of fiber lasers is described. In addition, the use of a helical-core geometry to suppress oscillation on higher-order modes in large-core double-clad fiber lasers is discussed. In preliminary experiments we have obtained ~90W of output in a beam with M2 ~ 5 from a conventional straight-core Yb-doped double-clad fiber with V=11 for ~150W of launched pump power at ~938nm from a beam-shaped diode-stack, and ~ 24.3W of output in a beam with M2 ~ 3 from a Yb-doped helical-core fiber for ~50W of launched pump power. The prospects for further improvement in performance and beam quality are considered.

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Published date: 2003

Identifiers

Local EPrints ID: 13833
URI: https://eprints.soton.ac.uk/id/eprint/13833
PURE UUID: a23a4cce-6842-4697-bbf4-322e2d2c8ff1

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Date deposited: 13 Jan 2005
Last modified: 17 Jul 2017 17:00

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