Abstract

First results on a diode-pumped multikilowatt-class Er3+:YAG solid-state heat-capacity laser (SSHCL) are reported. The laser achieves an output power of 4650W and output energies in excess of 440J. A moderate crystal temperature increase due to crystal heating of 56.7K/s is measured at 11.3kW of pump power and the temperature-related power drop is determined to 8.8W/K. The presented work is believed to be the first multi-kilowatt-class resonantly diode-pumped Er3+:YAG laser.

© 2011 Optical Society of America

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