[摘要]:A diode-pumped thin-disk laser based on Tm:KLu (WO4)(2)/KLu(WO4)(2) epitaxies is realized. The emission is in the 1850-1945 nm spectral range for Tm-doping between 5 and 15 at. %. The maximum slope efficiency of 47% with respect to the absorbed power obtained with 5 at. % Tm: KLu (WO4)(2)/KLu(WO4)(2) corresponds to a maximum output power of similar to 6 W in cw operation. (C) 2012 Optical Society of America