Abstract

Silicon nanosheets-polyvinyl alcohol (Si-PVA) film was prepared and employed as a SA in obtaining an erbium-doped Q-switched laser. To the best of our knowledge, this is the first time that few-layer silicon nanosheets has been used as a SA to achieve a Q-switched erbium-doped fiber laser. We have demonstrated passively Q-switched operation with an average output power of 0.89 mW, a peak pulse power of 6.52 mW, and a pulse width of 2.32 μs with a repetition rate of 58.7 KHz. The results indicate that silicene owns excellent nonlinear properties and extensively potential applications in ultrafast photonics.

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