Vertically standing PtSe2 film: a saturable absorber for a passively mode-lockedNd:LuVO4 laser

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摘要 ThenovelverticallystandingPtSe2filmontransparentquartzwaspreparedbyselenizationofplatinumfilmdepositedbythemagnetronsputteringmethod,andanNd:LuVO4passivelymode-lockedsolid-statelaserwasrealizedbyusingthefabricatedPtSe2filmasasaturableabsorber.TheX-raydiffractionpatternandRamanspectrumofthefilmindicateitsgoodcrystallinitywithalayeredstructure.ThethicknessofPtSe2filmismeasuredtobe24nmaccordingtothecross-sectionheightprofileoftheatomicforcemicroscopeimage.High-resolutiontransmissionelectronmicroscopyimagesclearlydemonstrateitsverticallystandingstructurewithaninterlayerdistanceof0.54nmalongthec-axisdirection.Themodulationdepth(AT)andsaturationfluence(Фs)ofPtSe2filmaremeasuredtobe12.6%and17.1μJ/cm2,respectively.Theobtainedmode-lockedlaserspectrumhasacentralwavelengthof1066.573nm,witha3dBbandwidthof0.106nm.Thetransformlimitedpulsewidthofthemode-lockedlaserwascalculatedtobe15.8ps.Amaximumaverageoutputpowerof180mWwithaworkingrepetitionrateof61.3MHzisobtained.Tothebestofourknowledge,thisisthefirstreportofthegenerationofultrafastmode-lockedlaserpulsesbyusinglayeredPtSe2asasaturableabsorber.
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出版日期 2018年07月17日(中国期刊网平台首次上网日期,不代表论文的发表时间)
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