We demonstrate a cladding-pumped single-mode plane-polarized ytterbium-doped fiber laser generating 633 W of continuous-wave output power at 1.1 µm with 67% slope efficiency and a polarization extinction ratio better than 16 dB. The laser is end pumped through both fiber ends and shows no evidence of roll-over, even at the highest output power, which is limited only by the available pump power.
© 2005 Optical Society of America
Y. Jeong, J. Nilsson, J. K. Sahu, D. B. Soh, P. Dupriez, C. A. Codemard, S. Baek, D. N. Payne, R. Horley, J. A. Alvarez-Chavez, and P. W. Turner, "Single-mode plane-polarized ytterbium-doped large-core fiber laser with 633-W continuous-wave output power," Opt. Lett. 30, 955-957 (2005)