Abstract:We propose and demonstrate an in-band pumped all-fiberized passively Q-switched laser emitting at 1080 nm. A single mode 1030 nm fiber laser is used as the pump source, while a 2D material, CVD-grown monolayer graphene, is adopted as a saturable absorber inside the ring cavity. The repetition rate of the output pulses can be varied from 12.74 to 24.6 kHz with the pulse duration around 12 µs. The maximum average output power is 34.25 mW, with the pulse energy of 1.392 µJ. This work proves the practicability of … Show more
“…To obtain ultrafast pulse with high signal to noise ratio (SNR) and longterm stability, the saturable absorber (SA) is a key component [16][17][18][19]. In recent years, a series of low dimensional materials as SAs in optical photonics devices have been realized, including but not limited to graphene [20][21][22], transition metal dichalcogenides (TMDCs) [14,[23][24][25], topological insulators (TI) [26], Mxene [27,28], bismuthine [29,30], BP [31][32][33] and so on [34][35][36][37][38][39][40][41]. Notably, graphene is gapless [42], leading to weak optical absorption.…”
Two-dimensional (2D) materials have attracted extensive interests due to their wide range of electronic and optical properties. After continuous and extensive research, black phosphorus (BP), a novel member of 2D layered semiconductor material, benefit for the unique in-plane anisotropic structure, controllable direct bandgap characteristic, and high charge carrier mobility, has attracted tremendous attention and successfully applied in ultrafast pulse generation. This article, which focuses on near-infrared ultrafast laser demonstration of BP, present discussion of preparation methods for high quality BP nanosheet, various BP based ultrafast lasers in the spatial/temporal domain, and the future research needs.
“…To obtain ultrafast pulse with high signal to noise ratio (SNR) and longterm stability, the saturable absorber (SA) is a key component [16][17][18][19]. In recent years, a series of low dimensional materials as SAs in optical photonics devices have been realized, including but not limited to graphene [20][21][22], transition metal dichalcogenides (TMDCs) [14,[23][24][25], topological insulators (TI) [26], Mxene [27,28], bismuthine [29,30], BP [31][32][33] and so on [34][35][36][37][38][39][40][41]. Notably, graphene is gapless [42], leading to weak optical absorption.…”
Two-dimensional (2D) materials have attracted extensive interests due to their wide range of electronic and optical properties. After continuous and extensive research, black phosphorus (BP), a novel member of 2D layered semiconductor material, benefit for the unique in-plane anisotropic structure, controllable direct bandgap characteristic, and high charge carrier mobility, has attracted tremendous attention and successfully applied in ultrafast pulse generation. This article, which focuses on near-infrared ultrafast laser demonstration of BP, present discussion of preparation methods for high quality BP nanosheet, various BP based ultrafast lasers in the spatial/temporal domain, and the future research needs.
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