Abstract

We report on a cladding-pumped, ytterbium-doped large-core-area fiber amplifier that is capable of generating 51.2  W of average power at a 1064-nm center wavelength, an 80-MHz repetition rate, and a 10-ps pulse duration. In an ytterbium-doped large-mode-area fiber these pulses could be amplified up to 43.2  W with diffraction-limited beam quality M21.3. Power scaling limitations that arise from nonlinear distortions such as self-phase modulation and stimulated Raman scattering are discussed.

© 2001 Optical Society of America

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