Abstract

We report on the generation of versatile pulse patterns in an erbium-doped fiber laser incorporating a 2D nano-materials, topological insulator (TI): Bi2Te3. By depositing of the TI on a microfier, an effctive saturable absorber (SA) would be created, which has combined the advantages from the strong nonlinear optical response in TI material together with the suffiently-long-range interaction length in fiber taper. The microfiber-based TI SA operates as both an excellent saturable absorber for mode-locking and a high-nonlinear medium for promoting the formation of versatile pulse patterns in the fiber laser. By adjustment the pump power and polarization state, we can adjusted the number of pulse in one pulse envelope and obtain various of multi-solitons.

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