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High power two-micron fibre lasers

High power two-micron fibre lasers
High power two-micron fibre lasers
A double-clad thulium-doped silica fibre laser, pumped by two beam-shaped diode-bars operating at 787-790nm, has yielded 14W of single-mode output at ~2nm, with a slope efficiency with respect to launched power of 46%. Using a tunable laser configuration, comprising an external cavity with a diffraction grating, a maximum output power of 10.5W at 1921nm has been obtained, and wavelength tuning at multi-watt power levels over 215nm from 1855 to 2070nm has been demonstrated. The prospects for further improvement in performance will be discussed. In addition, a simple approach for further scaling of power levels from fibre lasers in the two-micron regime, based on intracavity wavelength combining of multiple fibre lasers is described. In a preliminary demonstration, four cladding-pumped thulium-doped silica fibre lasers are wavelength-combined yielding an output power >14W. The prospects for further increase in output power via this approach will be discussed.
0819449806
Clarkson, William A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
Abdolvand, A.
afdd5ceb-903f-4eb0-8c8b-9d418763e07d
Shen, D.Y.
f9a1bd01-6f5c-428a-83fb-3a8b2dadbaad
Hayward, R.A.
75d8a6ac-ff53-44a9-b2b5-21617a2d73a7
Cooper, L.J.
249c1748-92f2-42aa-9cbc-0e4f5dcc3bf9
Williams, R.B.
1d172577-abdb-4589-8ded-153cf6732c20
Nilsson, J.
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Clarkson, William A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
Abdolvand, A.
afdd5ceb-903f-4eb0-8c8b-9d418763e07d
Shen, D.Y.
f9a1bd01-6f5c-428a-83fb-3a8b2dadbaad
Hayward, R.A.
75d8a6ac-ff53-44a9-b2b5-21617a2d73a7
Cooper, L.J.
249c1748-92f2-42aa-9cbc-0e4f5dcc3bf9
Williams, R.B.
1d172577-abdb-4589-8ded-153cf6732c20
Nilsson, J.
f41d0948-4ca9-4b93-b44d-680ca0bf157b

Clarkson, William A., Abdolvand, A., Shen, D.Y., Hayward, R.A., Cooper, L.J., Williams, R.B. and Nilsson, J. (2002) High power two-micron fibre lasers. XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers. 25 - 30 Aug 2002. (doi:10.1117/12.515806).

Record type: Conference or Workshop Item (Paper)

Abstract

A double-clad thulium-doped silica fibre laser, pumped by two beam-shaped diode-bars operating at 787-790nm, has yielded 14W of single-mode output at ~2nm, with a slope efficiency with respect to launched power of 46%. Using a tunable laser configuration, comprising an external cavity with a diffraction grating, a maximum output power of 10.5W at 1921nm has been obtained, and wavelength tuning at multi-watt power levels over 215nm from 1855 to 2070nm has been demonstrated. The prospects for further improvement in performance will be discussed. In addition, a simple approach for further scaling of power levels from fibre lasers in the two-micron regime, based on intracavity wavelength combining of multiple fibre lasers is described. In a preliminary demonstration, four cladding-pumped thulium-doped silica fibre lasers are wavelength-combined yielding an output power >14W. The prospects for further increase in output power via this approach will be discussed.

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More information

e-pub ahead of print date: 2002
Additional Information: (SPIE 5120)
Venue - Dates: XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 2002-08-25 - 2002-08-30

Identifiers

Local EPrints ID: 13736
URI: https://eprints.soton.ac.uk/id/eprint/13736
ISBN: 0819449806
PURE UUID: 257ca0d0-9f42-4238-927e-bd06070dea32
ORCID for J. Nilsson: ORCID iD orcid.org/0000-0003-1691-7959

Catalogue record

Date deposited: 17 Jan 2005
Last modified: 06 Jun 2018 12:55

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Contributors

Author: A. Abdolvand
Author: D.Y. Shen
Author: R.A. Hayward
Author: L.J. Cooper
Author: R.B. Williams
Author: J. Nilsson ORCID iD

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