简介：Thispaperanalysestheanteriordescendingbranchofthearteriacoronariasinistrafromtheviewofhemodynamics.Theresultsshowthatthebranchingoftheanteriordescendingbranchwithanangleof90°attheopeningandtheformationofthemuralarteriacoronariaarethehemodynamiccharacteristics.Theshearingstressoftheturbulentflow,theadditionalpressure,theformationofthebloodvertex,andtheimpulsivepressure,causedbythesecharacteristics,arehemodynamicreasonsthatleadstotheoccurenceofatherosclerosisinanteriordescendingbranch.

简介：Twodifferentpulsecleaningtechniquesforultra-highcontrastlasersystemsarecomparablyanalysedinthiswork.Thefirstpulsecleaningtechniqueisbasedonnoncollinearfemtosecondoptical-parametricamplification(NOPA)andsecond-harmonicgeneration(SHG)processes.Theotherisbasedoncross-polarizedwave(XPW)generation.Withadoublechirpedpulseamplifier(double-CPA)scheme,althoughtemporalcontrastenhancementinahigh-intensityfemtosecondTi:sapphirechirpedpulseamplification(CPA)lasersystemcanbeachievedbasedonbothofthetechniques,thetwodifferentpulsecleaningtechniquesstillhavetheirownadvantagesandaresuitablefordifferentcontrastenhancementrequirementsofdifferentlasersystems.

简介：Wemeasuretheelectromagneticdegreeoftemporalcoherenceandtheassociatedcoherencetimeforquasi-monochromaticunpolarizedlightbeamsemittedbyanLED,afilteredhalogenlamp,andamultimodeHe–Nelaser.ThemethodisbasedonobservingattheoutputofaMichelsoninterferometerthevisibilities(contrasts)oftheintensityandpolarization-statemodulationsexpressedintermsoftheStokesparameters.Theresultsareingoodagreementwiththosededuceddirectlyfromthesourcespectra.Themeasurementsarerepeatedafterpassingthebeamsthroughalinearpolarizersoastoelucidatetheroleofpolarizationinelectromagneticcoherence.Whilethepolarizervariestheequal-timedegreeofcoherenceconsistentlywiththetheoreticalpredictionsandalterstheinnerstructureofthecoherencematrix,thecoherencetimeremainsalmostunchangedwhenthelightvariesfromunpolarizedtopolarized.Theresultsareimportantintheareasofapplicationsdealingwithphysicalopticsandelectromagneticinterference.

简介：WereportonthetemporalcontrastperformanceofthePHELIXfacilityinviewoftherequirementsimposedbysolidtargetinteractionexperiments.Therequirementanalysisforthenanosecondandpicosecondtemporalcontrastisderivedfromempiricaldataandsimpletheoreticalmodeling,whiletherealizationshowsthatusinganultrafastopticalparametricamplifierandplasmamirrorsenablesmeetingthisspecification.

简介：TheobjectiveoftheApollon10PWprojectisthegenerationof10PWpeakpowerpulsesof15fsat1shotmin-1.InthispaperabriefupdateonthecurrentstatusoftheApollonprojectispresented,followedbyamoredetailedpresentationofourexperimentalandtheoreticalinvestigationsofthetemporalcharacteristicsofthelaser.Morespecificallythedesignconsiderationsaswellasthetechnologicalandphysicallimitationstoachievetheintendedpulsedurationandcontrastarediscussed.

简介：Sr原子的运动过程在He-Sr的亚稳亚稳的转变激光纵的搏动的分泌物被分析，一个简明前後一致的物理模型被开发。分泌物参数，主要粒子密度，电子温度，和放射激光的脉搏的时间的进化是数字地计算的。模型提供的结果同意有实验的井，和每激光脉搏的时间的行为被模拟结果成功地解释。[从作者抽象]

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简介：时间的不平等的一种新类型被讨论，它适用于算法的进程，包含处理联合起来的有限记忆。他们是Leggett-Grag，以及到由Brukner等的修改的一种选择。如果一个人考虑包含有限存储器的系统的量和古典进程的比较(在两个盒子中的一样的能力)，不平等给我们能期望量加速的一条清楚的消息。在古典进程，一个人清楚地总是定义可能的大小的值，或以信息处理语言如果我们有一取决于到达各个的数据的某功能的顺序的计算走在一个算法上，函数总是有清楚地定义的值。在算法的结束以后，在量盒子中，仅仅最后的价值被定义。与Bohrs补充一致，所有中间的价值不能被归功于明确的价值。

简介：Realtimedigitalrecordingandnumericalreconstructionofatemporaldigitalhologramsequencehavebecomefeasibleinrecentyears.Theyprovideanewmeasurementmethodwhichenjoysthevaluableadvantagesofbeingfull-field,noncontactandhighprecision.Inthispaper,acombinedmethodoftemporaldigitalhologramsequenceandwindowedFouriertransformisproposedtomeasurethekinematicparametersofrandomvibration.AseriesofhologramsarerecordedbyCCDcameraandtheoriginalphasecanberecon...

简介：浅水里的matchedfield处理的时间的关联(MFP)上的线性、独居的内部波浪的效果数字地与不同频率为声学的来源被调查，深度基于从experiment.It的海洋学的数据被显示出MFP的时间的关联作为独居的内部波浪的振幅减少或线性内部波浪increases.For的平均精力密度有更低的频率的声学的来源或下面定位了thermocline，tempor

简介：TheMHDinstabilitiesintheplasmacentrecanbeobservedwithpinholecamerastorecordsoftX-ray(SXR)emissionalongmanychordswithhighspeatialresolution.ThesoftX-raysystemintheHL-1Mtokamakconsistsofthreepinholecameraswith60chords.Themethodofsingularvaluedecomposition(SVD)cansplitsuchsignalsintoorthogonalspatialandtemporalvectors.Bythismeans,

简介：Theworkpresentedinthispaperisastudyofoutputtemporalcontrastdegradationbynear-fieldqualitydeterioration,suchasintensitymodulationandwavefrontdeviation,inalargeaperturehighpowershortpulselasersystem.AtwostepfocusingalgorithmwithacoordinatetransformbasedontheFresnelapproximationinthespacedomainisusedforsimulatingtheoutputfocusedbyanoff-axisparabolicmirror.Thetemporalcontrastdegradationbyintensitymodulationandwavefrontdeviationisanalyzedandtheinfluenceofthediameteronthetemporalcontrastdegradationisrevealed.ThesimulationandassumptionresultsbasedontheparametersoftheShenGuang-IIlasersystemarecomparedwiththeonlineexperimentaltemporalcontrastdata.Thenear-fieldqualitydeteriorationmightleadtotemporalcontrastdegradation,hinderinghighertemporalcontrastinlargeaperturehighpowershortpulselasersystems.

简介：TemperatureisoneofthekeythermodynamicparametersofHEDmatter.Asapopulartechnique,thepyrometerofnarrow-bandlterstogetherwithphotodiodes(namelymulti-channelpyrometer)hasbeenapplied.However,thepyrometercanonlymeasureone-positiontemperatureinsingleshot[1;2].Actually,itisveryimportanttoknowtemperatureevolutionofmultiplepositionsinsingleshot,especiallyforthetargetinducedbyheavyionbeam,wherealargevolumeofHEDmattercanbegenerated.Consequently,afastnew-typepyrometerhasbeendesigned.

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简介：Dual-pumpedmicroring-resonator-basedopticalfrequencycombs(OFCs)andtheirtemporalcharacteristicsarenumericallyinvestigatedandexperimentallyexplored.ThecalculationresultsobtainedbysolvingthedrivenanddampednonlinearSchr?dingerequationindicatethatanultralowcoupledpumppowerisrequiredtoexcitetheprimarycombmodesthroughanon-degeneratefour-wave-mixing(FWM)processand,whenthepumppowerisboosted,boththecombmodeintensitiesandspectralbandwidthsincrease.Atlowpumppowers,thefieldintensityprofileexhibitsacosinevariationmannerwithfrequencyequaltotheseparationofthetwopumps,whilearollTuringpatternisformedresultingfromtheincreasedcombmodeintensitiesandspectralbandwidthsathighpumppowers.Meanwhile,wefoundthatthepowerdifferencebetweenthetwopumpfieldscanbetransferredtothenewlygeneratedcombmodes,whicharelocatedonbothsidesofthepumpmodes,throughacascadedFWMprocess.Experimentally,thedual-pumpedOFCswererealizedbycouplingtwoself-oscillatingpumpfieldsintoamicroringresonator.ThenumericallycalculatedcombspectrumisverifiedbygeneratinganOFCwith2.0THzmodespacingover160nmbandwidth.Inaddition,theformationofarollTuringpatternathighpumppowersisinferredfromthemeasuredautocorrelationtraceofa10freespectralrange(FSR)OFC.Theexperimentalobservationsaccordwellwiththenumericalpredictions.Duetotheirlargeandtunablemodespacing,robustness,andflexibility,theproposeddual-pumpedOFCscouldfindpotentialapplicationsinawiderangeoffields,includingarbitraryopticalwaveformgeneration,high-capacityopticalcommunications,andsignal-processingsystems.

简介：在低振幅的政体由于二光子的photorefractive效果屏蔽空间solitons的灰色的时间的性质被分析。结果显示宽广solitons在开始被产生，并且向稳定的状态monotonically作为时间发展灰solitons减少的紧张宽度到最小的价值。在一样的繁殖时间，solitons的FWHM与增加或m减少减少。而且，solitons的形成时间是独立人士和m。时间接近到绝缘的松驰时间决定的一个常数。

简介：Consideringthetimedelayindifferenthohlraumwallpositionscausedbyobliqueincidence,thespatio-temporalopticalfielddistributioncharacteristicsofahohlraumwall,especiallyduringtherisingedgeofaflat-toppedpulse,issimulatedbyafastFouriertransformmethodtogetherwithchromatography.Resultsdemonstratethatbeampropagationalongthehohlraumwallisapush-broomprocesswithcomplexdynamicspatial–temporalevolution.Inthefirstfewpicoseconds,theopticalintensityofthefrontpositionincreasesrapidly,whilethatoftherearpositionisrelativelyweak.TheratioRoftheopticalintensityduringtherisingedgeissmallerthanthatofthesteadystate.Rgraduallyincreasesandfinallytendstothevalueofthesteadystatewithtime.Calculationalsoshowsthat,withshortertotalwidthoftherisingedge,Roftheopticalfielddecreasesandthedifferencecomparedtothesteadystatebecomeslarger.Theevolutionismoreseverewithsmallerangleofinclination.

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