SnSe2 Nanosheets for Subpicosecond Harmonic Mode-Locked Pulse Generation

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Ji-Shu LiuXin-Feng Liu

Abstract

Tin diselenide (SnSe2 ) nanosheets as novel 2D layered materials have excellent optical properties with many promising application prospects, such as photoelectric detectors, nonlinear optics, infrared photoelectric devices, and ultrafast photonics. Among them, ultrafast photonics has attracted much attention due to its enormous advantages; for instance, extremely fast pulse, strong peak power, and narrow bandwidth. In this work, SnSe2 nanosheets are fabricated by using solvothermal treatment, and the characteristics of SnSe2 are systemically investigated. In addition, the solution of SnSe2 nanosheets is successfully prepared as a fiber-based saturable absorber by utilizing the evanescent field effect, which can bear a high pump power. 31st-order subpicosecond harmonic mode locking is generated in an Er-doped fiber laser, corresponding to the maximum repetition rate of 257.3 MHz and pulse duration of 887 fs. The results show that SnSe2 can be used as an excellent nonlinear photonic device in many fields, such as frequency comb, lasers, photodetectors, etc.

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Citations

Jul 28, 2020·Nanotechnology·Zhanqiang HuiZiyan Wu
May 15, 2020·Optics Express·A V FrimanA A Gorbatsevich
Oct 13, 2020·Nanotechnology·Lihui PangYi Lv
Jan 22, 2021·Nanoscale·Lu LiWenjun Liu
Mar 3, 2021·Optics Letters·Zengrun WenJintao Bai
Mar 18, 2021·Scientific Reports·Josu AmorebietaJoel Villatoro
Jun 18, 2021·Nano-micro Letters·Jiang OuyangWei Tao
Jul 24, 2021·Scientific Reports·Rabindra BiswasVarun Raghunathan
Aug 28, 2020·ACS Applied Materials & Interfaces·Xiaoyu LiuKai Zhang
Sep 1, 2020·ACS Applied Materials & Interfaces·Jiangjiang FengQi Jie Wang
Sep 18, 2020·ACS Applied Materials & Interfaces·Yiqing ShuWeicheng Chen
Nov 19, 2021·ACS Applied Materials & Interfaces·Safayet AhmedYuen Hong Tsang

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