简介：Theredistributionoftheenergyflowoftightlyfocusedellipticity-variantvectoropticalfieldsispresented.Wetheoreticallydesignandexperimentallygeneratethiskindofellipticity-variantvectoropticalfield,andfurtherexploretheredistributionoftheenergyflowinthefocalplanebydesigningdifferentphasemasksincludingfanlikephasemasksandvortexphasemasksonthem.Theflexiblycontrolledtransverseenergyflowringsofthetightlyfocusedellipticity-variantvectoropticalfieldswithandwithoutphasemaskscanbeusedtotransportmultipleabsorptiveparticlesalongcertainpaths,whichmaybewidelyappliedinopticaltrappingandmanipulation.

简介：Ahybridno-corefiber(NCF)–gradedindexmultimodefiber(GIMF)structureisusedasasaturableabsorber(SA)formode-lockedlaseroperation.SuchanSAsupportsvarioustypesofsolitonoutputs.Bychangingthecavityparameters,notonlythespatiotemporalmode-lockingstateswithastablesinglepulsebutalsotightlyandlooselyboundsolitonsaregenerated.Single35.5pJsolitonscenteredat1568.5nmhavea4nmspectralfull-widthathalf-maximumandan818fstemporalduration.Tightlyboundsolitonpairswithcontinuouslytunablewavelengthfrom1567.48nmto1576.20nm,featuredwithan~700fspulsetrainwithaseparationof2.07ps,havebeenobservedbystretchingtheNCF-GIMFstructureddevice.Meanwhile,severaldifferentpulseseparationsfrom37.57psto56.46psoflooselyboundsolitonshavealsobeenrealized.Theresultsprovidehelpinunderstandingthenonlineardynamicsinfiberlasers.

简介：用向量衍射理论和现象学的模型，这份报纸调查集中的油炸圈饼横梁(DB)与不同拓扑的费用激动的单个中心对称的nanosphere的第二泛音代(SHG)。当粒子旁边是激动的时，强壮的向后的SHG(BSHG)出现的结果表演与拓扑的费用集中了DB????????????????￡吗？

简介：Concerningthespecificdemandonsolvingthelong-termconjugateheattransfer(CHT)problem,anewalgorithmoftheglobaltightly-coupledtransientheattransferbasedonthequasi-steadyflowfieldisfurtherputforward.Comparedtothetraditionalloosely-coupledalgorithm,thecomputationalefficiencyisfurtherimprovedwiththegreatlyreducedupdatefrequencyoftheflowfield,andmoreovertheupdatestepoftheflowfieldcanbereasonablydeterminedbyusingtheengineeringempiricalformulaoftheNusseltnumberbasedonthechangesoftheinletandoutletboundaryconditions.Takingaductheatedbyinnerforcedairflowheatingprocessasanexample,thecomparingresultstothetightly-coupledtransientcalculationbyFluentsoftwareshowsthatthenewalgorithmcansignificantlyimprovethecomputationalefficiencywithareasonableaccuracyonthetransienttemperaturedistribution,suchasthecomputingtimeisreducedto22.8%and40%whiletheductwalltemperaturedeviationare7%and5%respectivelyusingtwoflowupdatetimestepof100sand50sonthevariableinlet-flowrateconditions.