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Impact of energy-transfer-upconversion on performance in quasi-three-level solid-state lasers

Impact of energy-transfer-upconversion on performance in quasi-three-level solid-state lasers
Impact of energy-transfer-upconversion on performance in quasi-three-level solid-state lasers
Energy-transfer-upconversion (ETU) has a detrimental impact on performance in a number of different solid-state lasers [1]. ETU manifests itself as a reduction in the effective upper laser level lifetime leading reduced energy storage and increased thermal loading, and hence can be particularly problematic when attempting to scale to high average power or operate in Q-switched mode. In some situations ETU can be so severe that a very large fraction of the absorbed pump light is converted to heat and thermally-induced damage results, or it may prevent the build-up of a large enough population inversion for threshold to be reached. The requirement for a larger fraction of the active ions to be excited in a quasi-three-level laser can further exacerbate these issues.
978-1-4244-4080-1
Kim, J.W
e358011a-5c07-4fd9-93c6-c8f58d82c387
Mackenzie, J.I
1d82c826-fdbf-425b-ac04-be43ccf12008
Clarkson, W.A
3b060f63-a303-4fa5-ad50-95f166df1ba2
Kim, J.W
e358011a-5c07-4fd9-93c6-c8f58d82c387
Mackenzie, J.I
1d82c826-fdbf-425b-ac04-be43ccf12008
Clarkson, W.A
3b060f63-a303-4fa5-ad50-95f166df1ba2

Kim, J.W, Mackenzie, J.I and Clarkson, W.A (2009) Impact of energy-transfer-upconversion on performance in quasi-three-level solid-state lasers. European Conference on Lasers and Electro-Optics (CLEO/Europe-EQEC), Munich, Germany. 14 - 19 Jun 2009. 1 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

Energy-transfer-upconversion (ETU) has a detrimental impact on performance in a number of different solid-state lasers [1]. ETU manifests itself as a reduction in the effective upper laser level lifetime leading reduced energy storage and increased thermal loading, and hence can be particularly problematic when attempting to scale to high average power or operate in Q-switched mode. In some situations ETU can be so severe that a very large fraction of the absorbed pump light is converted to heat and thermally-induced damage results, or it may prevent the build-up of a large enough population inversion for threshold to be reached. The requirement for a larger fraction of the active ions to be excited in a quasi-three-level laser can further exacerbate these issues.

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Published date: 2009
Venue - Dates: European Conference on Lasers and Electro-Optics (CLEO/Europe-EQEC), Munich, Germany, 2009-06-14 - 2009-06-19

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Local EPrints ID: 78982
URI: https://eprints.soton.ac.uk/id/eprint/78982
ISBN: 978-1-4244-4080-1
PURE UUID: 96169891-fcd4-40c3-8a87-fe1eb874aae7
ORCID for J.I Mackenzie: ORCID iD orcid.org/0000-0002-3355-6051

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Date deposited: 16 Mar 2010
Last modified: 28 Nov 2019 01:37

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Contributors

Author: J.W Kim
Author: J.I Mackenzie ORCID iD
Author: W.A Clarkson

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