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Impact of energy-transfer-upconversion on the performance of hybrid Er:YAG lasers

Impact of energy-transfer-upconversion on the performance of hybrid Er:YAG lasers
Impact of energy-transfer-upconversion on the performance of hybrid Er:YAG lasers
Using a hybrid fiber-bulk laser scheme based on Er:YAG, we have achieved ~60 W and ~30 W of continuous-wave output at 1645nm and 1617nm respectively, and Q-switched pulse energies up to ~30 mJ (limited by coating damage). Investigation of various factors influencing laser performance has revealed that energy-transfer-upconversion can have a very detrimental impact on efficiency, even in continuous-wave mode of operation. In this paper we report on the results of this study, discuss various measures for reducing energy-transfer-upconversion and its effect on laser performance, and consider the prospects for further increase in output power and pulse energy.
9780819470461
1-8
Kim, J.W.
43f1b0c3-5a59-4449-a56a-386668bd061a
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
Kim, J.W.
43f1b0c3-5a59-4449-a56a-386668bd061a
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2

Kim, J.W., Sahu, J.K. and Clarkson, W.A. (2008) Impact of energy-transfer-upconversion on the performance of hybrid Er:YAG lasers. SPIE 6871 : Photonics West. 19 - 24 Jan 2008. pp. 1-8 . (doi:10.1117/12.761301).

Record type: Conference or Workshop Item (Other)

Abstract

Using a hybrid fiber-bulk laser scheme based on Er:YAG, we have achieved ~60 W and ~30 W of continuous-wave output at 1645nm and 1617nm respectively, and Q-switched pulse energies up to ~30 mJ (limited by coating damage). Investigation of various factors influencing laser performance has revealed that energy-transfer-upconversion can have a very detrimental impact on efficiency, even in continuous-wave mode of operation. In this paper we report on the results of this study, discuss various measures for reducing energy-transfer-upconversion and its effect on laser performance, and consider the prospects for further increase in output power and pulse energy.

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e-pub ahead of print date: February 2008
Venue - Dates: SPIE 6871 : Photonics West, 2008-01-19 - 2008-01-24

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Local EPrints ID: 50691
URI: https://eprints.soton.ac.uk/id/eprint/50691
ISBN: 9780819470461
PURE UUID: 6f9cf03e-ee87-40e0-bde8-2b4358d7d484

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Date deposited: 19 Mar 2008
Last modified: 25 Nov 2019 19:18

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