Single-frequency, single-mode, plane-polarized ytterbium-doped fiber master oscillator power amplifier source with 264 W of output power.
Jeong Y, Nilsson J, Sahu JK, Soh DB, Alegria C, Dupriez P, Codemard CA, Payne DN, Horley R, Hickey LM, et al. Opt Lett. 2005 Mar 1; 30(5):459-61.