Dissipative soliton generation in Er-doped fiber laser mode-locked by Sb2Te3 topological insulator.

We report on the generation of dissipative solitons in an Er-doped fiber laser mode-locked by antimony telluride (Sb 2 Te 3) topological insulator in the near-zero dispersion regime. Layers of Sb 2 Te 3 were deposited on a side-polished (D-shaped) fiber using a pulsed magnetron sputtering technique. Sub-170-fs pulses with 34-nm full width at half-maximum (FWHM) and 0.21 nJ of pulse energy were obtained from an all-fiber, ring-shaped laser cavity after the compression in a single-mode fiber.