High-average-power picosecond Yb-doped fiber amplifier.

摘要: We report on a cladding-pumped, ytterbium-doped large-core-area fiber amplifier that is capable of generating 51.2  W average power at 1064-nm center wavelength, an 80-MHz repetition rate, and 10-ps pulse duration. In large-mode-area these pulses could be amplified up to 43.2  W with diffraction-limited beam quality M2∼1.3. Power scaling limitations arise from nonlinear distortions such as self-phase modulation stimulated Raman scattering are discussed.