Controlled stacking of graphene monolayer saturable absorbers for ultrashort pulse generation in erbium-doped fiber lasers

• DOI: 10.1364/ome.7.002528
• Publication Date: 2017-06-21T16:57:18Z
• Authors: Henrique G. Rosa; Juan A. Castañeda; Carlos H. Brito Cruz; Lázaro A. Padilha; José C. V. Gomes; Eunézio A. Thoroh...; Hugo L. Fragnito
• Keywords: Saturable absorption; Erbium

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 regime, regardless number of stacked layers (from 1 to 5 layers), present ps recovery time. Pulses with duration from 0.60 1.17 generated an EDFL, depending on (i.e., linear optical absorption) used. The results it is possible increase a stacking without affecting its nonlinear behavior ultrafast response Therefore, by individual CVD-monolayer control properties graphene-based EDFLs simultaneously tune their ultra-short pulse generation.