简介：Thisletterpresentsalabel-freebiomolecularimagingtechniquebasedonwhite-lightinterferometryandspectraldetection.Themethodmeasuresthicknesschangescausedbyspecificbindingbetweenbiomoleculestodetectthepresenceofcertainanalyte.Aspectrum-shiftingalgorithmisdevelopedtoresolvethethicknessinformationfromthespectrum.Theaxialresolutionoftheexperimentalinstrumentcanreach～1nm,therebyenablingdetectionoftraceamounts(～1ng/mm2)ofproteinsorDNA.ThisletteralsopresentstwoexperimentstoprovethefeasibilityofthemethodfordetectingproteinsandDNAwithoutfluorescentlabeling.

简介：Fusionofsyntheticapertureradar(SAR)andforwardlookinginfrared(FLIR)imagesisanimportantsubjectforaerospaceandsensorsurveillance.ThispaperpresentsaschemetoachieveanaturalcolorimagebasedonthecontoursfeatureofSARandthetargetregionfeatureofFLIRsothattheoverallscenerecognitionandsituationalawarenesscanbeimproved.TheSARandFLIRimagesarefirstdecomposedintosteerablepyramids,andthecontourmapsintheSARimageandtheregionmapsintheFLIRimagearecalculated.Thecontourandregionfeaturesarefusedateachlevelofthesteerablepyramids.Acolorimageisthenformedbytransferringdaytimecolortothemonochromicimagebyusingthenaturalcolortransfertechnique.ExperimentalresultsshowthattheproposedmethodiseffectiveinprovidingacolorfusionofSARandFLIRimages.

简介：在这封信，空间光(FSO)用有图案的调整和桶察觉的通讯被介绍在复杂、吵闹的环境改进位错误率(BER)性能。散布的光在这通讯结构被平均。秒顺序关联，小浪正规化，并且察觉到压缩在重建算法被联合。有N位的一个信号从大部分被重建很好不到N大小。没有光过滤器在传统的FSO通讯使用了的narrowband，数字模拟和实验被执行。它能也在安全通讯被要求的真实网络被采用。这提供大机会为FSO通讯的真实应用铺平道路。

简介：Inholographicencryption,doublerandom-phaseencodingintheFresneldomain(DRPEiFD)isaprevalentencryptionmethodbecauseitislenslessandsecure.However,noisesbringadverseeffectsduringdecryption.Inthisletter,weintroducequick-response(QR)codingduringencryptiontoresistnoises.WetransformtheoriginalinformationintoaQRcodeandthenencryptthecodeasahologramthroughDRPEiFD.Toretrievetheinput,wedecryptthehologramintheoppositemannertotheencryptionandsubsequentlyobtainaQRcodewithnoises.Byscanningthiscodewithproperapplicationsinsmartphones,wecanobtainanoise-freeretrieval.Numericalexperimentsandimagesscannedbyasmartphoneareshowntovalidateourproposedmethod.

简介：Influencesofthescatteringphasefunctionsonspatiallyresolveddiffusereflectancefromahomogenoussemi-infinitemediumclosetosourcearestudiedwithMonteCarlosimulation.Itisshownthattheinfluencesofopticalparametershigherthanthesecondorderonthediffusereflectancearequiteweakintheregionfrom0.3toseveraltransportmeanfreepatheswhenHenyey-Greensteinphasefunctionoracombinedphasefunctionoftwoparametersareused.ButthisinfluencemaybesubstantialifthedoubleHenyey-Greensteinfunctionisusedtodescribethescatteringpropertyoftissue.

简介：Micro-depositionofanaluminumfilmof500-nmthicknessonaquartzsubstratewasdemonstratedbylaser-inducedforwardtransfer(LIFT)usingafemtosecondlaserpulse.Withthehelpofatomicforcemicroscopy(AFM)andscanningelectronmicroscopy(SEM),thedependenceofthemorphologyofdepositedaluminumfilmontheirradiatedlaserpulseenergywasinvestigated.Asthelaserfluencewasslightlyabovethethresholdfluence,thehigherpressureofplasmaforthethickerfilmmadethefreesurfaceofsolidphaseburstout,whichresultedinthatnotonlythesolidmaterialwassputteredbutalsothedepositedfilmintheliquidstatewasmadeirregularly.

简介：Asimpleapproachbasedonsixtransfercellsandsimulatedannealingalgorithmforanalyzingandtailoringthespectraofarbitrarymicroringresonatorarraysispresented.Couplingcoefficients,ringsizes,andwaveguidelengthsofmicroringresonatorarrayscanbearbitraryinthisapproach.Afterdevelopingthisapproach,severalexamplesaredemonstratedandoptimizedforvariousconfigurationsofmicroringresonatorarrays.Simulationresultsshowthatthisapproachisintuitive,efficient,andintelligentforapplicationsbasedonmicroringresonatorarrays.

简介：Thebehaviorofpopulationtransferinanexcited-doubletfour-levelsystemdrivenbylinearpolarizedfew-cycleultrashortlaserpulsesisinvestigatednumerically.Itisshownthatalmostcompletepopulationtransfercanbeachievedevenwhentheadiabaticcriterionisnotfulfilled.Moreover,therobustnessofthisschemeintermsoftheRabifrequenciesandchirpratesofthepulsesisexplored.

简介：我们求婚并且试验性地证明为M照振幅调整(正交调幅)追踪计划的一个通用、盲目的极化状态基于一个没有决定的指导半径的线性Kalman过滤器(RD-LKF)发信号。追踪性能的极化为调音的照阶段移动(QPSK)和16正交调幅信号通过模拟和实验被调查。静态的极化demultiplexing性能和动态追踪能力上的过滤器参数的影响经由模拟被讨论。在modulation-format-independent情形的过滤器参数的优化策略被建议，模拟被执行为QPSK，16QAM，和混合QPSK/16QAM信号评估极化demultiplexing惩罚。最后，建议没有决定的RD-LKF是试验性地，与经常的模量算法的各自的算法和为QPSK和16正交调幅和ultrafast极化追踪的优点的multimodulus算法相比，能力被证实。

简介：Enhanced2.7μmemissionisobtainedinEr3+/Tm3+andEr3+/Ho3+codopedZBYAglasses.Absorptionandemissionspectraaretestedtocharacterizethe2.7μmemissionpropertiesofEr3+/Tm3+andEr3+/Ho3+dopedZBYAglassesandareasonableenergytransfermechanismof2.7μmemissionbetweenEr3+andTm3+Ho3+)ionisproposed.CodopingofTm3+orHo3+significantlyreducesthelifetimeoftheEr3+:4I13/2levelduetotheenergytransferofEr3+:4I13/2→Tm3+:3F4orEr3+:4I13/2→Ho3+:5I7.Thus,the2.7μmemissionisstrengthenedandthe1.5μmemissionisdecreasedaccordinglyespeciallyintheEr3+/Tm3+sample.TheupconversioneffectsbetweentheEr3+/Tm3+andEr3+/Ho3+dopedZBYAglassesaredifferentattributetothedifferentenergytransferefficiencies.Bothofthetwocodopedsamplespossessnearlyequallargeemissioncrosssection(16.6×10-21cm-2)around2.7μm.TheresultsindicatethatthisEr3+/Tm3+orEr3+/Ho3+dopedZBYAglasshaspotentialapplicationsin2.7μmlaser.