We demonstrate for the first time a cw diode-pumped Yb:GdCOB laser with 48% slope efficiency, producing 190 mW at 1050 nm. A 100-nm tunability has also been achieved.
(140.3380) Lasers and laser optics : Laser materials
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.5680) Lasers and laser optics : Rare earth and transition metal solid-state lasers
F. Augé, F. Balembois, P. Georges, A. Brun, F. Mougel, G. Aka, A. Kahn-Harari, and D. Vivien, "High-efficiency cw diode-pumped lasing and tunability of Yb:GdCOB (Yb3+:Ca4GdO(BO3)3)," in Advanced Solid State Lasers, M. Fejer, H. Injeyan, and U. Keller, eds., Vol. 26 of OSA Trends in Optics and Photonics (Optical Society of America, 1999), paper TuC4.