Real-time monitoring of a self-starting Mamyshev oscillator with a normal dispersive thulium-doped fibre

We developed a self-starting and all-fibre Mamyshev oscillator for the ~2 µm range with tailored fibre Bragg Gratings, normal dispersive Thulium-doped and highly-nonlinear fibres, and realised a time-stretch dispersive Fourier spectroscopy at this short-wave infrared wavelength as well. We will portray the development stages from simulation and lay-outing over fabrication to characterisation, with particular regard to the laser's genuine real-time build-up behaviour. This enhanced insight into transient Mamyshev oscillator dynamics, including bound, Q-switching and noise-like pulse stages, is not only essential for advancing laser technology but will also broaden our understanding of ultra-short pulse phenomena as a whole.