Laser operation of the
5S
2→
5I
7transition in 2 percent Ho:YLF at room temperature is reported. Oscillations at

nm were obtained in flashlamp and dye laser pumped experiments. Thresholds of 4 J/cm and

J/cm were observed in flashlamp and laser pumped operation, respectively. The 750-nm transition in the Ho:YLF is a four-level laser with a stimulated emission cross section of

cm
2.