High average power ultra-fast fiber chirped pulse amplification system

摘要: We report on a high-gain diode-pumped ytterbium-doped fiber-amplifier system delivering pulse energies in the 100-μJ range at high repetition rates (32 kHz) with nearly-diffraction-limited beam quality (M2∼1.7) 1060-nm center wavelength. Femtosecond seed-laser pulses are stretched commercially available single-mode fiber and compressed after amplification to subpicosecond duration. In multimode Yb-doped amplifier we have demonstrated average powers of up 22 W single-pulse 130 μJ.