High average power ultrashort pulses with >5 GW peak power

In this talk we present an ultrashort pulse source that could overcome these limitations. We have used two successive stages of nonlinear compression to shorten the pulses of a state-of-the-art fiber chirped pulse amplification (FCPA) system. In comparison, we have included a pulse shaper (FemtoJock, biophotonics solutions) to achieve almost transform limited pulses. For the experiments presented here the system is operated at 50 kHz repetition rate and a pulse energy of 1 mJ corresponding to an average power of 50 W. The pulse duration of these pulses has been measured with an autocorrelator and FROG to be 480 fs, thus, the peak power is 1.8 GW. The experimental setup of the nonlinear compression is shown.