We report a high-average-power, near-diffraction-limited Er:LuAG laser generating 5 W of power at 1.648μm in either cw or repetitively Q -switched operation. When the laser is Q switched at 9 kHz, we measure 0.52 mJ/pulse . The laser is end pumped by a 20-W erbium fiber laser and achieves >30% optical conversion efficiency and >40% incident slope efficiency. This is, to our knowledge, the highest performance (average power and conversion efficiency) obtained from a bulk solid-state erbium laser.
© 2003 Optical Society of America
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3500) Lasers and laser optics : Lasers, erbium
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3540) Lasers and laser optics : Lasers, Q-switched
(280.3400) Remote sensing and sensors : Laser range finder
Scott D. Setzler, Kevin J. Snell, Thomas M. Pollak, Peter A. Budni, York E. Young, and E. P. Chicklis, "5-W repetitively Q-switched Er:LuAG laser resonantly pumped by an erbium fiber laser," Opt. Lett. 28, 1787-1789 (2003)