Abstract
We present for the first time a high-power Ho: YAG laser in-band pumped by a (AlGaIn)(AsSb) laser diode stack with 1910nm centre wavelength. Using a single 60mm long Ho: YAG rod in a simple and compact plane-plane resonator geometry a maximum laser output power of 40W and a slope efficiency of 57% with respect to the absorbed pump power were obtained. A beam quality of M2 < 4 was found.
© 2008 Optical Society of America
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