Controlled stacking of graphene monolayer saturable absorbers for ultrashort pulse generation in erbium-doped fiber lasers
Tipo
Artigo
Data de publicação
2017
Periódico
Optical Materials Express
Citações (Scopus)
18
Autores
Rosa H.G.
Castaneda J.A.
Cruz C.H.B.
Padilha L.A.
Gomes J.C.V.
de Souza E.A.T.
Fragnito H.L.
Castaneda J.A.
Cruz C.H.B.
Padilha L.A.
Gomes J.C.V.
de Souza E.A.T.
Fragnito H.L.
Orientador
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Título de Volume
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Resumo
© 2017 Optical Society of America.Stacked chemical-vapour deposited (CVD) graphene monolayer samples were fabricated and applied as saturable absorbers in erbium-doped fiber laser (EDFL). Transient absorption experiments show that at the saturation absorption regime, and regardless the number of stacked layers (from 1 to 5 layers), samples present 1 ps recovery time. Pulses with duration from 0.60 to 1.17 ps were generated in an EDFL, depending on the number of graphene layers (i.e., the linear optical absorption) used. The results show that it is possible to increase the linear optical absorption of a graphene stacking without affecting its nonlinear optical behavior and ultrafast response time. Therefore, by stacking individual CVDmonolayer graphene samples it is possible to control the optical properties in graphene-based EDFLs and simultaneously tune their ultra-short pulse generation.
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Assuntos Scopus
Chemical vapours , Erbium doped fiber laser , Graphene layers , Nonlinear optical behavior , Saturation absorption , Transient absorption , Ultra-fast response time , Ultrashort pulse generation