Yb-doped mode-locked fiber laser based on pre-chirp managed nonlinear amplification

This paper reports a 100 fs Yb-doped mode-locked fiber laser based on pre-chirp managed nonlinear amplification. The system was first constructed with the mode-locked seed laser by using the nonlinear polarization rotation technology, which could deliver near-linear chirped stable pulse sequence at a repetition rate of 82.3 MHz. After a pre-amplifier and the pre-chirp managed nonlinear amplifier, the average power of the laser output was boosted over 12 W while the pulse width was reduced to less than 100 fs, effectively improved as a comparison to the 180 fs FWHM of the compressed seed pulse.