简介:Anovelread-onlysuper-resolutionopticaldiscstructure(substrate/masklayer/dielectriclayer)ispropsedinthispaper.ByusingaSithinfilmasthemasklayer,therecordingpitswithadiameter380nmandadepth50nmarereadoutonthedynamicmeasuringequipment;thelaserwavelengthλis632.8nmandthenumericalapertureis0.40.IntheoftheSithinfilmis18nmandthesignal-to-noiseratiois32dB.
简介:Anovelmethodforconvertinganarrayofout-of-phaselasersintooneofin-phaselasersthatcanbetightlyfocusedispresented.Themethodexploitssecond-harmonicgenerationandcanbeadaptedfordifferentlaserarraysgeometries.Experimentalandcalculatedresults,presentedfornegativelycoupledlasersformedinasquare,honeycomb,andtriangulargeometriesareingoodagreement.
简介:Improvementonextinctionandpollutionemissionhavebecomeoneofthemostprominentresearchtopicsingasturbine.Itiswidelyrecognizedthatthefuel/airmixturedistributionintherecirculationzoneisacriticalfactorinimprovingleanblow-out(LBO)andignition.Thispaperproposedanewlowemissionschemewithfuelstagedcentrallyandhybridinjectortoimproveflameoutandemission.Arelativesmallamountoffuelentersintocentralpilotairblastatomizerburnerandthenatomizedbyinnerswirlair.Theremainingmajorityoffuelisdirectlyinjectedintovanechannelsoftheprimaryswirlerthroughaseriesofholeslocatedonthesidewallofthemainstage.Onlypilotstageisfueledunderignitionandleanflameoutcondition.Theuniformityoffuel/airmixturedistributionintheprimaryzoneofthenewdesigndecreasesNOXemission,meanwhilethefuelairmixtureinpilotrecirculationzoneislocallyrichtoimproveflameoutandignition.Experimentalinvestigationwasconductedtocomparethenewschemewithbaselinedesignofdual-swirlerintermsofLBOandignitioncharacteristicsunderthesameconditioninamulti-sectorcombustor.Itisfoundthatthefuel-airratioofignitionlimitandLBOdecreasewiththereferencevelocityincreasing.Theexperimentalresultsalsoshowthatthenewschemesuccessfullyimproveleanblow-outandbroadentheoperationrangeofthecombustor.Theexperimentalresultsindicatedthatthecentrallystagedschemecanwidentheoperationboundaryofthecombustorandcanprovideguidancefordesignandoptimizationofcombustionchamber.
简介:In-planeandOut-of-planeEmissionofUnstableNucleifrom40Ar+197AuReactionSystem¥HeZhiyong;DuanLimin;LiZuyu;JinGenmi...