Efficient energy extraction and improved pulse quality of a Mamyshev ultrafast fiber laser with a Fabry-Perot output coupler

Ultrafast Mamyshev Oscillators (MOs) can generate sub-50-fs pulses with over 1-MW peak power, but easy and efficient output coupling preserving pulse quality remains unexplored. We designed a symmetric Fabry-Perot (FP) output coupler with SiO 2 /Nb 2 O 5 layers to minimize satellite pulses and improve pulse quality when combined with a commercial super-Gaussian bandpass (BP) filter. Implemented in a 1030 nm Yb-fiber MO, this scheme reduced pulse duration from 48 fs (BP filter only) to 40 fs after compression, suppressing autocorrelation satellites by a factor ∼3 while preserving the same energy level. These results confirm that FP-based output coupling enables a clean and efficient pulse extraction in MOs.