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Proceedings Paper

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

Paper Details

Date Published: 20 February 2008
PDF: 8 pages
Proc. SPIE 6871, Solid State Lasers XVII: Technology and Devices, 68710W (20 February 2008); doi: 10.1117/12.761301
Show Author Affiliations
Ji Won Kim, Univ. of Southampton (United Kingdom)
J. K. Sahu, Univ. of Southampton (United Kingdom)
W. A. Clarkson, Univ. of Southampton (United Kingdom)

Published in SPIE Proceedings Vol. 6871:
Solid State Lasers XVII: Technology and Devices
W. Andrew Clarkson; Norman Hodgson; Ramesh K. Shori, Editor(s)

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