Dissipative soliton resonance in an all-normal-dispersion Yb-doped figure-eight fibre laser with tunable output

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Abstract
We report on the generation of large pulse duration-tuning and wide wavelength-tunable mode-locked pulses, operating in a dissipative soliton resonance (DSR) region, by an all-normal-dispersion Yb-doped figure-eight fibre laser. For the case of a DSR operating at 1045.1 nm, the pulse duration varies from 26.3 ps to 8.621 ns with the increase of pump power. At the maximum pump power of 400 mW, the pulse energy is as high as 4.8 nJ. In particular, through properly adjusting the polarization controllers, the DSR can be wavelength-tuned in a wide range from 1037.3 to 1075.3 nm. To the best of our knowledge, this is the widest tunable range ever reported for DSR operation. This wavelength-tunable mode-locked fibre laser with a high-energy output may be well-suited for many potential applications.

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