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1.
SONG Guiju WANG Xiangzhao FANG Zujie 《Chinese Journal of Lasers》2001,10(4):251-256
1 Introduction Inusualopticalrangingtechniques,suchaslow coherenceinterferometry (LCI) [1] ,confocalmicroscopy[2 ] ,andsoon ,themeasurabledisplacementordistanceisjustcalculatedfromtheinterferencesignal,whichonlygivestheopticalpathlength ,theproductoftherefract… 相似文献
2.
1 Introduction Pupil planefilterscanbeusedtochangethelightintensitydistributioninthefocalplane ,sotheyhavepotentialapplicationsintheareasofopticaldatastorage[1~ 3 ] ,lithography[4] ,andmicroscopy[5~ 7] .Manypupilfiltershavebeenstudied ,suchasfilterswithvariedamp… 相似文献
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1 Introduction Sincethefiberwasplaceddirectlybehindthe phasemask ,whichwasoriginallydemonstratedbyK .O .Hilletal.in 1 993[1] ,thismethodhasbeenusedwidelyforwritingfiberBragg grating .However ,thecontacttechniqueofphasemaskcanonlyinscribethefiberBragg gratingwith… 相似文献
4.
1 Introduction Theultrafastpulsescanningnear fieldopticalmicroscopyandtemporalresolutionnear fieldspectraltechnique,whichdevelopedfromthecombinationofscanningnear fieldopticalmicroscopy (SNOM )andtheultrafastpulse,haveattractedgreatinterest[1~ 3] .Thesetech… 相似文献
5.
Numerical Simulation of the Response of an Aluminum Target Impacted by an Intense Laser Driven Flyer
1 Introduction Theimpacttechniqueofflyerdrivenbychemicalexplosiveandgasgunhasbeenusedtostudyhigh pressureequation of state (EOS)formanyyears[1] .Becausetheflyerisatalowenergydensityandentropyenhancementstateinthiscase ,itcaneasilyrecoveritsinitialstatebefo… 相似文献
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1IntroductionShadowmoireinterferometryisawholefieldnoncontact3Dmeasurementtechnique.ItisfirstappliedbyH.Takasaki[1]in1970.In... 相似文献
7.
Analyzing of LED-induced Blood Fluorescent Spectra 总被引:6,自引:0,他引:6
1 IntroductionThelight inducedfluorescencespectroscopy (LIFS )fordiagnosticsofbiologicaltissues[1,2 ] ,hasbeenwellbuiltupforseveraldecades.Inclinicsthefluorescencemicroscopyandcytometrybecomeroutineprocedurestocharacterize quantitativelythevastmajorityofhuma… 相似文献
8.
YANG Xihua SUN Zhenrong LI Hua DING Liang’en WANG Zugeng 《Chinese Journal of Lasers》2001,10(2):123-126
1 Introduction Electromagneticallyinducedtransparency(EIT)hasattractedmuchattentionduetoitsextensiveapplications,suchasquantumnoisereduction[1] ,pulsematching[2 ,3] ,andenhancementofnonlinearmixing[4 ,5] .Inessence,EITisanatomiccoherenceinducedbyastrongcouplingl… 相似文献
9.
1 Introduction Opticaltomographyofscatteringmediasuchasbiologicaltissuesisanincreasinglyactivefieldbecauseofitsadvantagesinnoninvasion ,nonionizationandopticalcontrastwhenitisusedforbiomedicaldiagnosis[1] .Themechanismofopticalimagingisbasedonthediffere… 相似文献
10.
1 Introduction Inrecentyears ,increasingattentionhasbeen paidtohigh peak powerall solid statepulsedblue greenlasersforsomeapplicationssuchasspectroscopy ,display ,opticaldatastorage ,underseacommunicationsandsoon .Suchlaserscanberealizedbyintracavityorexter… 相似文献
11.
1 Introduction Alongperiodfibergrating (LPFG)isanovelpassivefiberelementarisinginrecentyears[1] .SeveralapplicationsofLPFGhavebeenfound ,suchas gain profileflattenedfilter,band rejectionfilter,andtemperature ,strainornewchemicalsensors[2 ,3] .ItcanbeUV writtenor… 相似文献
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1 Introduction Themethodsthatcanmeasurethephaseandthe pulsedurationmainlyincludetheFROG[1] (frequency -resolvedopticalgating)andtheSPIDER[2 ] (spectral phaseinterferometryfordirectelectric fieldreconstruction) .FROG[1] usestheunknownpulseitselfasatime delayed ga… 相似文献
13.
1 Introduction BecauseLiF∶F- 2 color centercrystalhasitsowndistinguishedcharacteristics[1~ 5] ,ithasbeenusedasactivemediums[4 ,6,7] orasmodulatedelements[8,9] .Inthispaper,wewillintroduceanotherkindofusage ,thatis ,itisusedbothasanactivemediumforcolorcenterlasertuna… 相似文献
14.
1 Introduction ThematchedspatialfilteringproposedbyVanderlugt[1] hasreceivedconsiderableattentionbecauseithasinherentadvantageofshiftinvariance ,butthistechniquesuffersfromsensitivitytorotationandscaledeformation .Theinvarianceisthekeytopatternrecogniti… 相似文献
15.
ZHANG Xiqin XING Da 《Chinese Journal of Lasers》2001,10(5):373-377
1 Introduction Extractingusefulinformationaboutthedynamicalscatterersfromthetemporalfluctuationsofscatteringlightfieldhasbeenstudiedformanyyears.Thedevelopmentofdiffusing wavespectroscopy[1~ 3 ] (DWS)hasextendedthetraditionalapplicationsinsingle scatterin… 相似文献
16.
1 Introduction Inrecentyears,boththetheoreticalandexperimentalinvestigationsonlasercoolingandtrappinghavebecomeoneofthemajorfieldsinatomic,molecularandoptical physics[1~ 8] .Thedevelopmentoflasercoolingandtrappingtechnologyisimportantfortheapplicationssu… 相似文献
17.
1 Introduction NIRlighthasadvantagesforimagingthehumanbodyduetoitshighersafetyandbetterpenetrationthroughboneincomparisonwithtraditionalimagingtechniquessuchasXrayandultrasound.Soitprovidesapotentiallynoninvasivetoolforclinicaldiagnosisofspaceocc… 相似文献
18.
1 Introduction Wavelength tunableultra shortopticalpulsesourcesareattractinggreatinterestforavarietyofapplications,suchasopticalfibersensors,wavelength divisionmultiplexingcommunicationsystemandtime resolvedspectroscopy .Ingeneral,wavelengthtuningisreali… 相似文献
19.
1 Introduction Inphotorefractivecrystal,manyapplications,suchasimageamplificationandimagestorage ,needtousethepropertyofhighdiffractionefficiency .Someauthors[1] havereferredthathighdiffractionefficiencyinphotorefractiveLiNbO3crystalcanbeobtainedbywriting… 相似文献
20.
1 Introduction Thesynthesisofcarbonnitridethinfilmshasbeenthesubjectofintensestudysincethetheoretical predication[1,2 ] andexperimentalrealization[3] of β C3N4thinfilms.Manyattemptshavebeenmadetosynthesizethismaterialby physicalandchemicalmethods ,suchasreact… 相似文献