Abstract
Tantalum disulfide (TaS2) has been employed for catalysis and optical switch due to its tunable band gap, strong photoluminescence, and controllable size. However, its nonlinear optical response and applications in ultrafast optics have not been exploited. In this work, TaS2 based saturable absorber (TaS2-SA) is prepared, which exhibits strong saturable absorption characteristics with modulation depth of 8.5%. Based on the TaS2-SA, polarization domain wall solitons and polarization locked vector solitons are successfully realized. To the best of our knowledge, this is the first study of the polarization characteristics of TaS2 based fiber lasers. Our findings suggest that TaS2 is a promising nonlinear optical material and provide a valuable method for the development of TaS2 based ultrafast photonic devices.
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