Experimental and numerical study of pulse dynamics in positive net-cavity dispersion mode-locked Yb-doped all-fiber lasers

We report on environmentally-stable mode-locked Yb-doped all-fiber lasers operating in the wave-breaking-free and stretched-pulse regime. The laser generates positively-chirped pulses with parabolic spectral profile in both regimes. Numerical simulations confirm the intracavity pulse evolution.