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简介：Inthecontemporarylargetokamak,thedisruptiveterminationofadischargewillreducethelifetimeofthefirstwallmaterialswiththeintenseheatfluxattheenergyquenchandtheintenserunawayelectronsduringthecurrentquench,andgeneratehighelectronmagneticforcesonvacuumvesselcomponentswithintenseeddycurrentatthecurrentquench.Thus,avoidanceandsofteningoftheenergyquenchandthecurrentquenchandcontrollinganexpecteddisruptionoremergencyshutdownmustbeestablishedinthepresenttokamakmachines.

简介：Inthispaper,wereportanexperimentaldemonstrationofenablingtechnologyexploitingresonantpropertiesofplasmonicnanoparticles,fortherealizationofwavelength-sensitiveultra-minituarized(4μm×4μm)opticalmetadevices.Tothisend,theexampleofa1.3/1.6μmwavelengthdemultiplexerisconsidered.Itstechnologicalimplementationisbasedontheintegrationofgoldcut-wire-basedmetalinesonthetopofasilicon-on-insulatorwaveguide.TheplasmonicmetalinesmodifylocallytheeffectiveindexoftheSiwaveguideandthusallowfortheimplementationofwavelength-dependentopticalpathways.The1.3/1.6μmwavelengthseparationwithextinctionratiobetweentwodemultiplexers’channelsreachingupto20dBisexperimentallydemonstrated.Theconsideredapproach,whichcanbereadilyadaptedtodifferenttypesofmaterialplanarlightwavecircuitplatformsandnanoresonators,issuitedfortheimplementationofagenericfamilyofwavelength-sensitiveguided-waveopticalmetadevices.

简介：在本文里，我们给出了微分方程组解的非允许分量之定义，探讨了一类微分方程组解的m-非允许分量的存在性问题，得到了几个结果。它是文[9]的进—步讨论．

简介：Inthispaper,wepresentm-timesecant-likemulti-projectionalgorithmforsparseunconstrainedminimizationproblem.Weprovethismethodareallq-superlinearlyconvergenttothesolutionaboutm≥l.Atlast,wediscussfromsomenumericalresults,howtochoosethenumbermtodeterminetheapproximatingmatrixproperlyinpracticaluse.

简介：研究了vonNeumann代数A上的零点（m,n）-可导映射,证明了：对任意固定的非零整数m,n且（m＋n）（m-n）≠0,如果线性映射δ：A→A对任意满足AB=0的A,B∈A有mδ（AB）＋nδ（BA）=mδ（A）B＋mAδ（B）＋nδ（B）A＋nBδ（A）,则δ是导子.

简介：Wereportlow-noise,high-performancesingletransversemode1.3μmInAs/GaAsquantumdotlasersmonolithicallygrownonsilicon(Si)usingmolecularbeamepitaxy.Thefabricatednarrow-ridge-waveguideFabry–Perot(FP)lasershaveachievedaroom-temperaturecontinuous-wave(CW)thresholdcurrentof12.5mAandhighCWtemperaturetoleranceupto90°C.Anultra-lowrelativeintensitynoiseoflessthan-150dB∕Hzismeasuredinthe4–16GHzrange.Usingthislow-noiseSi-basedlaser,wethendemonstrate25.6Gb/sdatatransmissionover13.5kmSMF-28.Theselow-costFPlaserdevicesarepromisingcandidatestoprovidecost-effectivesolutionsforuseinuncooledSiphotonicstransmittersininter/hyperdatacentersandmetropolitandatalinks.

简介：使用新的分析技巧研究了对于广义最速下降逼近法收敛到m-增生算子零点的充要条件，所得结果推广了几位作者早期与最近的相应结果．

简介：Thesingularsecond-orderm-pointboundaryvalueproblem-(Lφ）（x)=h(x)f(φ）（x)),0

简介：搭建了一套基于铥钬共掺光纤的激光放大系统，包含1个2μm增益开关主振荡器和一级铥钬共掺光纤放大器。获得了平均功率大于300mw的2txm脉冲输出，放大器平均功率增益达11dB，放大斜率效率达30％，这些性能指标与双包层掺铥光纤放大器相当。输出脉冲重频在40kHz时，最高脉冲能量为7．27μJ，脉宽88ns，对应的峰值功率为82．6W。放大过程中，激光光谱宽度小于0．3nm，边模抑制比大于35dB。

简介：RecentexperimentalresultsofHL-1MtokamakandprogressofHL-2Aprojectarepresented.Strongfishboneinstabilitywasobservedduringoff-axisECRH.ThisisfirstobservationofthefishboneinstabilitypurelydrivenbyenergeticelectronsproducedbyECRH.TheMBIwasfirstproposedanddemonstratedonHL-1M.RecentlynewresultsofMBIexperimentwereobtainedbyincreasingthepressureofgas.Astair-shapedensityincrementwasobtainedwithhigh-pressuremulti-pulseMBIjustlikethedensityevolutionbehaviorduringthemultipelletinjection.Itisshown

简介：含FTO的闪光照相系统中，FTO是由一组同心球层组成的静态高密度客体，其动态量程高达4480。后锥的使用会大大降低系统的直散比DSR，并且散射空间分布的不均匀性也很严重。

简介：本文给出任意有限维全微分方程的判定定理与求通解的一种方法。定理的条件是充要的。判断与求通解是同步进行的,方法简单,运用方便。解决了高维全微分方程的判断与求通解的困难。

简介：采用UMP2/6-311＋G（3df）方法研究了一系列化合物M_（n＋1）F_n（n=1,2;M=Na,K）体系的几何构型及非线性光学性质（NLO）.结果表明：这些体系均为超价化合物,均拥有较大的第一超极化率（β_0）.尤其是Na_3F_2体系中结构2c的β_0值为29.16×10~（-49）C~3·m~3·J~（-2）,是已知超价化合物Li_3F_2的2c结构的β_0值2.22×10~（-49）C~3·m~3·J~（-2）的13.1倍.

简介：研究每个忙期中第一个顾客被拒绝服务的M／M／1排队模型主算子在左半复平面中的特征值，证明2√λμ-λ-μ是该主算子的几何重数为1的特征值。

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简介：Asacontinuationof[1],theauthorstudiesthelimitcyclebifurcationaroundthefocusS1otherthanO(0,0)forthesystem(1)asδvaries.Aconjectureonthenon-existenceoflimitcyclesaroundS1,andanotheroneonthenon-coexistenceoflimitcycleswoundbothOandS1aregiven,togetherwithsomenumericalexamples.

简介：Multilayerblackphosphorus（BP）nanoplateletsofdifferentthicknesseswerepreparedbytheliquidphaseexfoliationmethodanddepositedontoyttriumaluminumgarnetsubstratestoformsaturableabsorbers（SAs）.Thesewerecharacterizedwithrespecttotheirthickness-dependentsaturableabsorptionpropertiesat3μm.TheBP-SAswereemployedinapassivelyQ-switchedEr:Lu2O3laserat2.84μm.ByusingBPexfoliatedindifferentsolvents,stablepulsesasshortas359nsweregeneratedatanaverageoutputpowerofupto755mW.Therepetitionrateintheexperimentwas107kHz,correspondingtoapulseenergyof7.1μJ.TheseresultsprovethatBP-SAshaveagreatpotentialforopticalmodulationinthemid-infraredrange.

简介：ＡＮＨＡＲＭＯＮＩＣＡＮＡＬＹＳＩＳＦＯＲＯＰＥＲＡＴＯＲＳＩＮＴＨＥＣＡＳＥＯＦＡＬＯＣＡＬＬＹＣＯＭＰＡＣＴＡＢＥＬＩＡＮＧＲＯＵＰ：Ｆ．ＡＮＤＭ．ＲＩＥＳＺ　ＴＨＥＯＲＥＭＳＹｕＳｈｕｍｏ（于树模）（Ｄｅｐｔ．ｏｆＭａｔｈ．，ＦｕｄａｎＵｎｉｖ...

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