Pulse-compression down to 20 fs using a photonic crystal fiber seeded by a diode-pumped Yb:SYS laser at 1070 nm

We studied experimentally and theoretically the pulse compression using a zero-dispersion photonic crystal fiber in order to optimize the pulse duration and pulse shape. 20.3-fs pulses centered at 1070 nm have been produced using a diode-pumped system based on Yb:SYS crystal. The limitations such as pre-pulse amplitude or solitonic fission have also been studied.