Generation of 1 μJ and 40 fs pulses from a large mode area gain-managed nonlinear amplifier

We demonstrate numerically and experimentally a gain-managed nonlinear amplifier with a large mode area fiber. The amplifier delivers 1.2 mu J and sub-40 fs pulses with the spectrum spanning from similar to 1000 to similar to 1180 nm. We show that longitudinal gain-loss evolution plays an essential role in pulse formation by comparing simulations with different gain models to the experimental results. (C) 2020 Optical Society of America