简介：SG-ⅢlaserfacilityisnowthelargestlaserdriverforinertialconfinementfusionresearchinChina.Thewholelaserfacilitycandeliver180kJenergyand60TWpowerultravioletlaserontotarget,withpowerbalancebetterthan10%.WereviewthelasersystemandintroducetheSG-Ⅲlaserperformancehere.

简介：InthispaperwereviewtheprovisionofthelaserdiagnosticsthatareinstalledontheVulcanlaserfacility.Wewillpresentstrategiesfordealingwiththeenergyofhighenergysystemsandwithwaysofhandlingthebeamsizesofthelasers.Wepresentdatacapturedduringtypicalexperimentalcampaignstodemonstratetheirreliabilityandvariationinshottoshotvalues.

简介：Wewillreviewsomeoftherequirementsforalaserthatwouldbeusedwithalaserfusionenergypowerplant,includingfrequency,spatialbeamsmoothing,bandwidth,temporalpulseshaping,efficiency,repetitionrate,andreliability.Thelowestriskandoptimumapproachusesakryptonfluoridegaslaser.Adiode-pumpedsolid-statelaserisapossiblecontender.

简介：Laserisusedtoproduceverypowerfulbeamsoflight,sopowerfulthattheycanmakeholesinsteelinaflash.Todaylaserisfindingwiderandwideruseinmoreandmorefields.

简介：Thepossibilityofγ-raylasergenerationbytheradiationofwigglingelectronsinausualbackgroundlaserisdiscussed.

简介：Inthispaper,laserinducedplasmasignalswereanalyzedduringkeyholeweldingthroughthreemethods.Accordingtotheresults,therelativitybetweenopticalandacousticsignalsofplasmaisshownwhenweldsareinfull-penetration,orpartial-penetrationandnon-penetration.

简介：Ultrashortlaserpulsesareusedtocreatesurfacestructuresonthin(25μm)silicon(Si)wafers.Scanningthewaferwithagalvanometricmirrorsystemcreateslargehomogeneouslystructuredareas.Thevarietyofstructureshapesthatcanbegeneratedwiththismethodisexemplifiedbytheanalysisofshape,heightanddistanceofstructurescreatedintheambientmediaairandisopropanol.Astudyofthecorrelationbetweenstructureheightandremainingwaferthicknessispresented.Thecomparativelyeasymanufacturingtechniqueandthestructurevarietythatallowsforcustom-tailoredtargetsshowgreatpotentialforhighrepetitionrateionaccelerationexperiments.

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简介：Inthisstudy,weinvestigateanewsimpleschemeusingaplanarundulator(PU)togetherwithaproperlydispersedelectronbeam(ebeam)withalargeenergyspread(~1%)toenhancethefree-electronlaser(FEL)gain.ForadispersedebeaminaPU,theresonantconditionissatisfiedforthecenterelectrons,whilethefrequencydetuningincreasesfortheoff-centerelectrons,inhibitingthegrowthoftheradiation.ThePUcanactasafilterforselectingtheelectronsnearthebeamcentertoachievetheradiation.Althoughonlythecenterelectronscontribute,theradiationcanbeenhancedsignificantlyowingtothehigh-peakcurrentofthebeam.Theoreticalanalysisandsimulationresultsindicatethatthismethodcanbeusedfortheimprovementoftheradiationperformance,whichhasgreatsignificanceforshort-wavelengthFELapplications.

简介：Thecollectiveresponseofelectronsinanultrathinfoiltargetirradiatedbyanultraintense(6×1020Wcm-2)laserpulseisinvestigatedexperimentallyandvia3Dparticle-in-cellsimulations.Itisshownthatifthetargetissufficientlythinthatthelaserinducessignificantradiationpressure,butnotthinenoughtobecomerelativisticallytransparenttothelaserlight,theresultingrelativisticelectronbeamiselliptical,withthemajoraxisoftheellipsedirectedalongthelaserpolarizationaxis.Whenthetargetthicknessisdecreasedsuchthatitbecomesrelativisticallytransparentearlyintheinteractionwiththelaserpulse,diffractionofthetransmittedlaserlightoccursthroughasocalled‘relativisticplasmaaperture’,inducingstructureinthespatial-intensityprofileofthebeamofenergeticelectrons.Itisshownthattheelectronbeamprofilecanbemodifiedbyvariationofthetargetthicknessanddegreeofellipticityinthelaserpolarization.

简介：Significantelectromagneticpulses(EMP)canbegeneratedbytheintensivelaserirradiatingsolidtargetsininertialconfinementfusion(ICF).ToevaluatetheEMPintensityanddistributioninandoutsidethelaserchamber,wedesignedandfabricatedadisconeantennawithultra-widebandsofover10GHz.Thereturnloss(S11parameter)ofthisantennawasbelow-10dBandcouldevenachieveunder-30dBat3.1GHz.TheEMPintensityinthisstudyat80cmand40cmawayfromthetargetchambercenter(TCC)reached400kV/mand2000kV/m.ThecurrentresultsareexpectedtoofferpreliminaryinformationtostudyphysicsregardinglaserplasmainteractionsandwillalsolayexperimentalfoundationforEMIshieldingdesigntoprotectvariousdiagnostics.

简介：Inthisreviewpaper,weintroduceaself-phasecontrolledstimulatedBrillouinscatteringphaseconjugatemirror(SCSBS-PCM)andtheKumganglaser.TheSC-SBS-PCMwasproposedanddemonstrateditssuccessattheacademiclowpowerlevel,~100mJ@10Hz.TheKumganglaserisunderdevelopmenttoverifywhethertheSC-SBS-PCMisoperableatthekWlevel.Itisa4kWbeamcombinationlasercombiningfour1kWbeamsusingtheSC-SBS-PCM.IftheKumganglaserfunctionssuccessfully,itwillbethemostimportantsteptowardsaDreamlaser,ahypotheticallaserwithunlimitedpowerandahighrepetitionrate.

简介：ＡＶｉｓｉｔｔｏａＣｈｉｎｅｓｅＬａｓｅｒＳｐｅｃｉａｌｉｓｔ￥ＨＯＵＲＵＩＬＩ；ＺＨＡＯＳＨＩＴＩＡＮＬａｓｅｒｔｅｃｈｎｏｌｏｇｙｉｓｓｔｉｌｌｒｅｌａｔｉｖｅｌｙｎｅｗｔｏｔｈｅｍｅｄｉｃａｌｆｉｅｌｄｉｎＣｈｉｎａ．Ｔｈｅｍｏｖｅｎｏｗｉｓｔ...

简介：Acoherentcombinationofemissionpowerfromanarrayofcoupledsemiconductorlasersoperatingonthesamechipisoffundamentalandtechnologicalimportance.Ingeneral,thenonlinearcompetitionamongthearraysupermodescanentailincoherenceandspectralbroadening,leadingtoaspatiotemporallyunstableandmultimodeemissionpatternandthuspoorbeamquality.Here,byharnessingnotionsfromsupersymmetric(SUSY)quantummechanics,wereportthatthestrategiccouplingbetweenaclassIII-Vsemiconductormicroringlaserarraywithitsdissipativesuperpartnercanbeusedtolimitthenumberofsupermodesavailableforlaseractionstoone.Weintroduceanovelapproachbasedonsecond-orderSUSYtransformationinordertodrasticallysimplifythesuperpartnerarrayengineering.Comparedtoaconventionallaserarray,whichhasamultimodespectrum,aSUSYlaserarrayisobservedtobecapableofoperatinginasingle(transverse)supermode.EnhancementofthepeakoutputintensityoftheSUSYlaserarrayhasbeendemonstratedwithhighefficiencyandlowerlasingthreshold,comparedwithasinglelaserandaconventionallaserarray.Ourexperimentalfindingspavethewaytowardsbroad-areaandhigh-powerlightgenerationinascalableandstablefashion.

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简介：本文概述了激光器的产生过程,以及它在激光通信、激光测量和激光在PCB生产中的应用前景.

简介：Ablationdynamicsoftungstenirradiatedwitha70fslaserpulseisinvestigatedwithX-rayinterferometryandX-rayimagingusinga13.9nmsoftX-raylaserof7pspulseduration.Theevolutionofhigh-densityablationfrontoftungsten(i.e.,W)ispresented.Theablationfrontexpandsto～120nmabovetheoriginaltargetsurfaceat160psafterfemtosecond-laserirradiationwithanexpansionspeedofapproximately750m∕s.TheseresultswillprovideimportantdataforunderstandingablationpropertiesofW,whichisacandidatematerialofthefirstwallofmagneticconfinementfusionreactors.

简介：Wehavedevelopedhighdamagethresholdfilterstomodifythespatialprofileofahighenergylaserbeam.Thefiltersareformedbylaserablationofatransmissivewindow.Theablationsitesconstitutescatteringcenterswhichcanbefilteredinasubsequentspatialfilter.Bycreatingthefiltersindielectricmaterials,weseeanincreasedlaser-induceddamagethresholdfrompreviousfilterscreatedusing‘metalonglass’lithography.

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简介：有h<100>的铝氮化物(AlN)电影水晶的取向在希腊语的第二十三个字母(100)上被制作在由搏动的激光免职的房间温度的底层。激光精力密度的效果并且在这些电影的质量上退火被X光衍射学习，Fourier变换红外线的光谱学和扫描电子显微镜学。当有表面上的混杂粒子的增加的数字时，AlN电影的水晶的质量被增加激光精力密度更加改进。在600掳C的退火的处理在这部电影生产一个再结晶过程，由原来的crystallinity，新水晶的取向的外观，和雏晶的增加的改进描绘了。表面在退火期间由于谷物尺寸的增加变得更不平。CLC数字O484.1在资助下面由山东省的自然科学基础支持了没有Y2002A04