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) at a 1060-nm center wavelength. Femtosecond seed-laser pulses are stretched in a commercially available single-mode fiber and compressed after amplification to subpicosecond pulse duration. In a multimode Yb-doped fiber amplifier we have demonstrated average powers of up to 22 W and single-pulse energies of up to 130 μJ.
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Received: 16 August 2000 / Revised version: 4 September 2000 / Published online: 8 November 2000
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Liem, A., Nickel, D., Limpert, J. et al. High average power ultra-fast fiber chirped pulse amplification system . Appl Phys B 71, 889–891 (2000). https://doi.org/10.1007/s003400000470
- PACS: 42.55.Wd; 42.55.Xi; 42.65.Re