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Opt Lett. 2011 Apr 1;36(7):1245-7. doi: 10.1364/OL.36.001245.

High-efficiency multi-kilowatt Er3+:YAG solid-state heat-capacity laser.

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French-German Research Institute of Saint-Louis (ISL), 5, rue du Général Cassagnou, B.P. 70034, 68301 Saint-Louis Cedex, France.


First results on a diode-pumped multikilowatt-class Er(3+):YAG solid-state heat-capacity laser (SSHCL) are reported. The laser achieves an output power of 4650 W and output energies in excess of 440 J. A moderate crystal temperature increase due to crystal heating of 56.7 K/s is measured at 11.3 kW of pump power and the temperature-related power drop is determined to 8.8 W/K. The presented work is believed to be the first multi-kilowatt-class resonantly diode-pumped Er(3+):YAG laser.


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