Dissipative soliton resonance (DSR) exists in a dissipative system with narrow cavity parameter space in mode-locked fiber lasers. In this work, DSR generation with >800ns pulse width and >84% duty cycle is demonstrated in a mode-locked TDFL. To the best of our knowledge, this result presents the longest DSR pulse duration for 2μm fiber lasers, and the highest pulse duty cycle that has been achieved for any fiber laser operating in the DSR regime.
A monolithic widely wavelength-tunable TDFL mode-locked by SESAM is experimentally demonstrated in our contribution. The laser features a broad wavelength tuning range of 121 nm (1862 - 1983 nm). The central wavelength is tuned by a grating-based tunable filter in the ring laser cavity. To the best of our knowledge, this is so far the most widely wavelength-tunable TDFL mode-locked by SESAM.
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