Diode-pumped cw Alexandrite laser with temporally stable 6.5 W in TEM operation with prospect of power scaling.

We present the design of a longitudinally diode-pumped Alexandrite laser in continuous-wave operation and resulting performance data. A laser power of 6.5 W in fundamental mode operation was measured, which is, to the best of our knowledge, the highest laser power in fundamental mode operation yet reported.