Abstract
We demonstrate the highly stable soliton generation from a fiber laser mode-locked by the VSe2 nanosheets experimentally. The VSe2 nanosheets prepared via the liquid phase exfoliation method exhibit ultrafast relaxation time and excellent nonlinear optical behavior with saturation intensity and modulation depth of 14.28 MW/cm2 and 19.11%, respectively. A highly stable mode-locked Er3+-doped fiber laser with pulse duration of 714 fs and signal-to-noise ratio of 78.44 dB has been delivered successfully based on the VSe2 nanosheets saturable absorber. In addition, the transition from the conventional soliton to bound-state soliton has been observed experimentally. Our results reveal that VSe2 nanosheets possess excellent nonlinear optical performance and can act as a robust optical platform for versatile optical applications.
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