Photonics Research, 2018, 6 (2): 02000072, Published Online: Jul. 10, 2018
Passively mode-locked Er-doped fiber laser based on SnS2 nanosheets as a saturable absorber
Abstract
In this paper, tin disulfide (SnS 2 ), a two-dimensional (2D) n-type direct bandgap layered metal dichalcogenide with a gap value of 2.24 eV, was employed as a saturable absorber. Its appearance and nonlinear saturable absorption characteristics were also investigated experimentally. SnS 2 - PVA (polyvinyl alcohol) film was successfully prepared and employed as a mode-locker for achieving a mode-locked Er-doped fiber laser with a pulse width of 623 fs at a pulse repetition rate of 29.33 MHz. The results prove that SnS 2 nanosheets will have wide potential ultrafast photonic applications due to their suitable bandgap value and excellent nonlinear saturable absorption characteristics.
Kangdi Niu, Ruyi Sun, Qingyun Chen, Baoyuan Man, Huanian Zhang. Passively mode-locked Er-doped fiber laser based on SnS2 nanosheets as a saturable absorber[J]. Photonics Research, 2018, 6(2): 02000072.