In-situ spatially-resolved thermal and Brillouin diagnosis of high-power ytterbium-doped fibre laser by Brillouin optical time domain analysis
In-situ spatially-resolved thermal and Brillouin diagnosis of high-power ytterbium-doped fibre laser by Brillouin optical time domain analysis
An in situ spatially-resolved diagnosis of thermal and Brillouin characteristics of a double-clad ytterbium-doped fibre (YDF) laser operating at 1.09 µm is demonstrated. For this a Brillouin optical time domain analysis technique based on 1.55 µm Brillouin pump and probe beams is utilised. A 2.4 K temperature difference across the YDF laser when it was running with 6.5 W pump power has been measured and resolved. Based on the measured thermal and Brillouin characteristics of it is expected the YDF, that the effective Brillouin gain coefficient would decrease by 20% for 1.09 µm radiation if an 80 K temperature variation is built up across it, as a result of the quantum heating by the pump power.
153-154
Jeong, Y.
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Jáuregui, C.
1fc691e2-b7a2-4344-9f6d-dbc478499e3a
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Nilsson, J.
f41d0948-4ca9-4b93-b44d-680ca0bf157b
29 January 2009
Jeong, Y.
1c4007b7-fc94-4f7d-a080-929d40946902
Jáuregui, C.
1fc691e2-b7a2-4344-9f6d-dbc478499e3a
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Nilsson, J.
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Jeong, Y., Jáuregui, C., Richardson, D.J. and Nilsson, J.
(2009)
In-situ spatially-resolved thermal and Brillouin diagnosis of high-power ytterbium-doped fibre laser by Brillouin optical time domain analysis.
Electronics Letters, 45 (3), .
(doi:10.1049/el:20093465).
Abstract
An in situ spatially-resolved diagnosis of thermal and Brillouin characteristics of a double-clad ytterbium-doped fibre (YDF) laser operating at 1.09 µm is demonstrated. For this a Brillouin optical time domain analysis technique based on 1.55 µm Brillouin pump and probe beams is utilised. A 2.4 K temperature difference across the YDF laser when it was running with 6.5 W pump power has been measured and resolved. Based on the measured thermal and Brillouin characteristics of it is expected the YDF, that the effective Brillouin gain coefficient would decrease by 20% for 1.09 µm radiation if an 80 K temperature variation is built up across it, as a result of the quantum heating by the pump power.
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Published date: 29 January 2009
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Local EPrints ID: 78917
URI: http://eprints.soton.ac.uk/id/eprint/78917
ISSN: 0013-5194
PURE UUID: 7338bb52-c7ec-4a4c-80fc-230941b6c4a4
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Date deposited: 17 Mar 2010
Last modified: 14 Mar 2024 02:42
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Author:
Y. Jeong
Author:
C. Jáuregui
Author:
J. Nilsson
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