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

Ji Won Kim; J. K. Sahu; W. A. Clarkson

doi:10.1117/12.761301

20 February 2008 Impact of energy-transfer-upconversion on the performance of hybrid Er:YAG lasers

Ji Won Kim, J. K. Sahu, W. A. Clarkson

Proceedings Volume 6871, Solid State Lasers XVII: Technology and Devices; 68710W (2008) https://doi.org/10.1117/12.761301
Event: Lasers and Applications in Science and Engineering, 2008, San Jose, California, United States

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.

Citation Download Citation

Ji Won Kim, J. K. Sahu, and W. A. Clarkson "Impact of energy-transfer-upconversion on the performance of hybrid Er:YAG lasers", Proc. SPIE 6871, Solid State Lasers XVII: Technology and Devices, 68710W (20 February 2008); https://doi.org/10.1117/12.761301

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