Author:
Stark H.,Klenke A.,Benner M.,Buldt J.,Limpert J.
Abstract
We introduce a high-energy, high-power ultrafast fiber laser system. 8-pulse bursts are amplified in 16 parallel ytterbium-doped fiber amplifiers and spatiotemporally coherently combined to pulses of 32mJ energy, 158fs duration at 20kHz repetition rate.