High-power femtosecond Yb-doped fiber amplifier.
We report on the generation of linearly chirped parabolic pulses with 17-W average power at 75 MHz repetition rate and diffraction-limited beam quality in a large-mode-area ytterbium-doped fiber amplifier. Highly efficient transmission gratings in fused silica are applied to recompress these pulses down to 80-fs with an efficiency of 60%, resulting in a peak power of 1.7 MW. Power scaling limitations given by the amplifier bandwidth are discussed.
Jens
J
Limpert
T
T
Schreiber
T
T
Clausnitzer
K
K
Zöllner
H
H
Fuchs
E
E
Kley
H
H
Zellmer
A
A
Tünnermann