Passively mode-locked Er-doped fiber laser based on SnS2 nanosheets as a saturable absorber
In this paper, tin disulfide (SnS2), 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. SnS2-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 SnS2 nanosheets will have wide potential ultrafast photonic applications due to their suitable bandgap value and excellent nonlinear saturable absorption characteristics.
基金项目：National Natural Science Foundation of China (NSFC)10.13039/501100001809 (11474187, 61205174, 61475089); China Postdoctoral Science Foundation10.13039/501100002858 (2016M602177); Natural Science Foundation of Shandong Province10.13039/501100007129, China (ZR2014FM028, ZR2016FP01).
Ruyi Sun：Shandong Provincial Key Laboratory of Optics and Photonic Devices, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
Qingyun Chen：Shandong Provincial Key Laboratory of Optics and Photonic Devices, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
Baoyuan Man：Shandong Provincial Key Laboratory of Optics and Photonic Devices, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
Huanian Zhang：Shandong Provincial Key Laboratory of Optics and Photonic Devices, School of Physics and Electronics, Shandong Normal University, Jinan 250014, ChinaInstitute of Data Science and Technology, Shandong Normal University, Jinan 250014, China
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Kangdi Niu, Ruyi Sun, Qingyun Chen, Baoyuan Man, and Huanian Zhang, "Passively mode-locked Er-doped fiber laser based on SnS2 nanosheets as a saturable absorber," Photonics Research 6(2), 72-76 (2018)