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Multi-watt operation of a holmium doped silica fibre laser at 2.2 µm

Multi-watt operation of a holmium doped silica fibre laser at 2.2 µm
Multi-watt operation of a holmium doped silica fibre laser at 2.2 µm
Laser sources operating in the atmospheric transmission window between 2.1 and 2.25 µm are of interest for a range of applications (e.g. remote sensing, free-space communication and defence). Holmium fibre lasers provide good coverage of the lower part of this spectral region [1], but operation towards 2.2 µm is much more challenging due to a reduced emission cross-section and higher propagation losses associated with the IR absorption edge of fused silica. Furthermore, OH- -contamination can cause additional absorption around 2.2 µm. Here we investigate the limits of long-wavelength tuning of a holmium-doped fibre laser, and report, to the best of our knowledge, the first watt-level (4.1 W) output from a silica fibre laser operating at 2.2 µm.
Holmen, L.G.
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Shardlow, P.C.
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Barua, P.
ab53bdd9-e00f-46b0-b4f4-5ab6534fe8a6
Sahu, J.K.
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Simakov, N.
984eef10-d13b-4cc6-852f-bcc58b432832
Hemming, A.
68215ff2-b41f-42b0-bebb-d589ae97b5bb
Clarkson, W.A.
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Holmen, L.G.
16f7fd2c-6d1f-4c4d-a3ba-6c4a7784b5d8
Shardlow, P.C.
9ca17301-8ae7-4307-8bb9-371df461520c
Barua, P.
ab53bdd9-e00f-46b0-b4f4-5ab6534fe8a6
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Simakov, N.
984eef10-d13b-4cc6-852f-bcc58b432832
Hemming, A.
68215ff2-b41f-42b0-bebb-d589ae97b5bb
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2

Holmen, L.G., Shardlow, P.C., Barua, P., Sahu, J.K., Simakov, N., Hemming, A. and Clarkson, W.A. (2019) Multi-watt operation of a holmium doped silica fibre laser at 2.2 µm. 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019, ICM – International Congress Centre, Munich, Germany. 23 - 27 Jun 2019. 1 pp . (doi:10.1109/CLEOE-EQEC.2019.8872447).

Record type: Conference or Workshop Item (Poster)

Abstract

Laser sources operating in the atmospheric transmission window between 2.1 and 2.25 µm are of interest for a range of applications (e.g. remote sensing, free-space communication and defence). Holmium fibre lasers provide good coverage of the lower part of this spectral region [1], but operation towards 2.2 µm is much more challenging due to a reduced emission cross-section and higher propagation losses associated with the IR absorption edge of fused silica. Furthermore, OH- -contamination can cause additional absorption around 2.2 µm. Here we investigate the limits of long-wavelength tuning of a holmium-doped fibre laser, and report, to the best of our knowledge, the first watt-level (4.1 W) output from a silica fibre laser operating at 2.2 µm.

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More information

Published date: 17 October 2019
Venue - Dates: 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019, ICM – International Congress Centre, Munich, Germany, 2019-06-23 - 2019-06-27

Identifiers

Local EPrints ID: 441940
URI: http://eprints.soton.ac.uk/id/eprint/441940
PURE UUID: a0fefe59-da65-48e9-a125-a27ab22a1c1b
ORCID for P.C. Shardlow: ORCID iD orcid.org/0000-0003-0459-0581
ORCID for J.K. Sahu: ORCID iD orcid.org/0000-0003-3560-6152

Catalogue record

Date deposited: 02 Jul 2020 16:35
Last modified: 17 Mar 2024 03:27

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Contributors

Author: L.G. Holmen
Author: P.C. Shardlow ORCID iD
Author: P. Barua
Author: J.K. Sahu ORCID iD
Author: N. Simakov
Author: A. Hemming
Author: W.A. Clarkson

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