We report on experimental evaluation of laser gain and q-switched output pulse energy in vicinity of 2-microns in Tm:Lu2O3 ceramic rod end-pumped by 796-nm diodes. Also included is Comparative test evaluation of upconversion effects in Tm:Lu2O3, Tm:YLF, and Tm:YAG materials. Wide-band tunable 2 µm Tm:Lu2O3 laser is sought for remote sensing, eye–safe lasers, laser processing of transparent plastics, medical therapy, ultra¬fast lasers (UFL), accelera¬tion of nuclear particles, and generation of visible output via harmonic conversion.
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