Tantalum disulfide nanosheets for the generation of polarization domain wall solitons and polarization locked vector solitons

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.

Automated summary

Tantalum disulfide (TaS2) is a promising material for catalysis and optical switch due to its tunable band gap and strong photoluminescence. In this study, we prepared a TaS2-based saturable absorber that exhibits strong saturable absorption characteristics and successfully realized polarization domain wall solitons and polarization locked vector solitons. Our findings provide valuable insights for the development of ultrafast photonic devices based on TaS2.