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- W4221136614 abstract "In this paper, two-dimensional (2D) few-layer Ta 2 CT x nanosheets are fabricated by liquid phase exfoliation (LPE) method. The nonlinear optical absorption properties are studied by Z-scan and I-scan techniques, revealing excellent saturable absorption response with an effective nonlinear absorption coefficient of -92.2 cm/MW@1064 nm. The saturation intensity and modulation depth for 1064 nm and 1550 nm are determined to be 79 and 51 MW/cm 2 , 9.9% and 4.5%, respectively. Furthermore, by decorating few-layer Ta 2 CT x nanosheets onto microfiber, few-layer Ta 2 CT x saturable absorber (SA) is fabricated and applied in Yb-doped and Er-doped fiber lasers (YDFLs and EDFLs). Not only a normal mode-locked operation but also square-wave pulse (SWP) are realized by increasing the length of the laser cavity at 1.5 µm, highlighting the great potential of few-layer Ta 2 CT x nanosheets as an optical modulator. The maximum pulse duration of 5.56 ns is also the widest SWP width that can be realized with 2D materials without filtering device in the cavity. Our work provides a platform for exploring novel SAs materials and nonlinear phenomena in mode-locked fiber lasers." @default.
- W4221136614 created "2022-04-03" @default.
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- W4221136614 date "2022-03-30" @default.
- W4221136614 modified "2023-09-26" @default.
- W4221136614 title "Few-layer Ta<sub>2</sub>CT<sub>x</sub> nanosheets-based mode-locked fiber lasers" @default.
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- W4221136614 doi "https://doi.org/10.1364/ome.450273" @default.
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