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Two-dimensional tin diselenide nanosheets pretreated with an alkaloid for near-and mid-infrared ultrafast photonics

查看全文 作　　者：Zhenhong [1]Wang;Bin [1]Zhang;Bing [1]Hu;Zhongjun [1]Li;Chunyang [1]Ma;Yu [1]Chen;Yufeng [1]Song;Han [1]Zhang;Jun [1]Liu;Guohui [1]Nie 高影响力作者 机构地区：[1]Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics,Institute of Translational Medicine,Department of Otolaryngology,Shenzhen Second People's Hospital,The First Affiliated Hospital of Shenzhen University,Health Science Center,International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education,College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,China高影响力机构 出　　处：《Photonics Research》索引2020年第8卷第11期,共10页高影响力期刊 基　　金：Science,Technology and Innovation Commission of Shenzhen Municipality(JCYJ20190806163805286,JCYJ20190808143813399);Taipei University of Technology–Shenzhen University Joint Research Program(2020007);Natural Science Foundation of Guangdong Province(2019A1515111060,2020A151501787);China Postdoctoral Science Foundation(2019M660212);National Natural Science Foundation of China(61705140,61805115,61875132,61875138). 摘　　要：Two-dimensional(2D)tin diselenide(SnSe2),a novel layered material with excellent optical and electronic properties,has been extensively investigated in various promising applications,including photodetectors,optical switching,and ultrafast photonics.In this work,SnSe2 nanosheets have been obtained after pretreatment in an alkaloid,exhibiting high optical absorption and electron-enriched properties.Besides,the performances of the prepared SnSe2 in near-infrared(NIR)and mid-infrared(MIR)ultrafast photonics are presented.Notably,by employing the SnSe2-deposited microfiber device as a saturable absorber(SA)exhibiting typical nonlinear optical absorption properties,stable ultrashort pulses and rogue waves are realized in an erbium-doped fiber laser.Furthermore,the SnSe2-deposited SA device is also applied to a thulium-doped fiber laser to achieve stable ultrashort pulses.This study indicates that SnSe2 is expected to be a suitable candidate for ultrafast fiber lasers in the NIR and MIR regions. 关 键 词：SnSe2 fiber ULTRASHORT
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