简介：Non-uniformstep-sizedistributionisimplementedforsplit-stepbasednonlinearcompensationinsingle-channel112-Gb/s16quadratureamplitudemodulation(QAM)transmission.Numericalsimulationsofthesystemincludinga20×80kmuncompensatedlinkareperformedusinglogarithmicstepsizedistributiontocompensatesignaldistortions.50%ofreductioninnumberofstepswithrespecttousingconstantstepsizesisobserved.Theperformanceisfurtherimprovedbyoptimizingnonlinearcalculatingposition(NLCP)incaseofusingconstantstepsizeswhileNLCPoptimizationbecomesunnecessarywhenusinglogarithmicstepsizes,whichreducesthecomputationaleffortduetouniformlydistributednonlinearphaseforallsuccessivesteps.

简介：Athree-dimensionalmodelofGaAs/A1GaAsquantumdoubleringsinthelateralstaticelectricfieldisinvestigatedtheoretically.Theeigenvalueproblemwiththeeffective-massapproximationissolvedbymeansofthefinite-elementmethod.Theenergylevelsandwavefunctionsofquantum-confinedelectronsandheavyholesareobtainedandshowanagreementwithourprevioustheoreticalandexperimentalstudies.ItisshownintheapproximationofneglectingtheCoulombattractionbetweentheelectronandheavyholethatarelativelylargeStarkshiftofexcitonemissionof4meVisattainablewithanappliedelectricfieldof0.7kV/cm.

简介：直接运用变系数高阶非线性薛定谔方程的精确2-孤子解，来研究在孤子控制下两个飞秒光孤子间的相互作用，讨论了邻近孤子的稳定性。结果表明联合控制群速度色散分布，三阶色散分布和非线性分布能抑制两个飞秒光孤子间的相互作用，而且能避免孤子超前或滞后，在特定的孤子控制系统下，两个飞秒光孤子有良好的稳定性。

简介：WecreateaGaNphotocathodebasedongradedAlxGa1-xNbufferlayerstoovercometheinfluenceofbuffer-emissionlayerinterfaceonthephotoemissionoftransmission-modeGaNphotocathodes.Agateshapedspectralresponsewitha260-nmstartingwavelengthanda375-nmcut-offwavelengthisobtained.Averagequantumefficiencyis15%andshortwavelengthresponsesarealmostequivalenttolongwavelengthones.Thefittedinterfacerecombinationvelocityis5×104cm/s,withnegligiblemagnitude,provingthatthedesignofthegradedbufferlayersisefficientinobtaininggoodinterfacequalitybetweenthebufferandtheemissionlayer.

简介：2013年5月25-26日，第六届国际光子与光电子会议（The6thInternationalPhotonicsandOp—toElectronicsMeetings，POEM2013）在武汉光电国家实验室召开。开幕式上，美国光学学会的首席执行官ElizabethA．Rogan女士和华中科技大学副校长、武汉光电国家实验室常务副主任骆清铭教授到会致辞。4名本领域权威专家作全体大会报告，分别是：澳大利亚科学院院士、工程院院士、国际电工委员会委员，澳大利亚新南威尔士大学教授及超高效光电学研究中心执行研究主任MartinGreen，澳大利亚科学院院士、工程院院士、澳大利亚桂冠院士

简介：本文概述了Java编程的一个重要特征——事件驱动模式原理．剖析了JDK1．0版本中的层次传递事件模式和JDK1．1中的委派事件模式，对现存的两种模式进行了比较。

简介：Asecondgenerationsolaradaptiveoptics(AO)systemisbuiltandinstalledatthe1-mNewVacuumSolarTelescope(NVST)oftheFuxianSolarObservatory(FSO)in2015.TheAOhigh-ordercorrectionsystemconsistsofa151-elementdeformablemirror(DM),acorrelatingShack–Hartmann(SH)wavefrontsensor(WFS)witha3500Hzframerate,andareal-timecontroller.ThesystemsawfirstlightonMar.16,2015.Thesimultaneoushigh-resolutionphotosphereandchromosphereimageswithAOareobtained.Theon-skyobservationalresultsshowthatthecontrastandresolutionoftheimagesareapparentlyimprovedafterthewavefrontcorrectionbyAO.

简介：Anall-fiberopticallaserpulsemulti-passstretcherusingachirpedfiberBragggrating(CFBG)isdemonstrated.Pulsesfroma1053-nmmode-lockedfiberseedoscillatorarestretchedbymultiplepassingthroughachirpedfibergratingsetinafiberregenerativeamplifierstructure.Westretchthepulsefrom16psto1.855nsafterittransmitssevenloopsinthestretcher.Themainfactorsthataffectthestretchingresultsarediscussed.

简介：肿瘤是严重威胁人类健康和生命的第二大疾病,尽管已发展多种治疗方法,目前仍然是医学界所面临的挑战之一。针对癌症发生的根源,我们发展了新型激光免疫疗法。激光免疫疗法有效结合光热靶向治疗和免疫治疗,通过局部肿瘤损伤,激发宿主免疫防御系统,诱导宿主产生特异性抗肿瘤免疫反应。临床前和初步临床研究表明,激光免疫疗法能够有效地治疗转移肿瘤,并在对晚期恶性黑色素瘤患者及乳腺癌患者治疗中取得令人满意的疗效。基于原位自体全细胞抗肿瘤疫苗的原理,激光免疫疗法能够局部产生全细胞疫苗,诱发机体系统、长期的抗肿瘤免疫反应。本文将介绍激光免疫疗法的发展及临床应用。