简介：Yttriumaluminumgarnet(YAG)transparentceramicswerefabricatedbysinteringatoxygenatmosphere.Tetraethylorthosilicate(TEOS)wasaddedasthesinteringadditivetocontrolthegraingrowthanddensification.Poreswereeliminatedclearlyattemperaturelowerthan1700oC,whilegrainsizewasaround3μm.Thein-linetransmittancewas80%at1064nmwhensamplesweresinteredat1710oC.TheeffectofTEOSwasstudiedinoxygenatmospheresinteringforNd:YAGtransparentceramics.Athighertemperaturelike1710oC,thegraingrowthmechanismwassolutedrag,whileat1630and1550oCthegraingrowthwascontrolledbyliquidphasesinteringmechanism.And0.5wt.%TEOSwasthebestaddingcontentforNd:YAGsinteredinoxygenatmosphere.

简介：AIM:Toinvestigatetheeffectsofanewopeningpatterninneodymium:yttrium-aluminum-garnet(Nd:YAG)laserposteriorcapsulotomyonvisualfunction.METHODS:Thistechniquewasconductedalongacircularpattern.Theenergyrangedbetween0.8and1.2mJ/pulsewasconsumedandmeantotalenergylevelswere74±21mJ(mean±standarddeviation:SD,from40to167)andlasershotsaimedat150μmawaybehindadatumpointandwentalonganimaginarylinewhichextends0.5mminsidefromopticmarginandintothecircularenblocpattern.Vitreousstandswereattachedwithfragmentandthentheywerecutoffbythelaseraftercircularapplication.Thecircularfragmentwascompletelyseparatedfromvitreous,andthenthisfragmentwasquicklysunkinintravitrealspace.RESULTS:Thefollow-upperiodrangesfromatleastaweekto40mo,making15.8moonaverage.Theproceduraloutcomeshowed96%(74eyesoutofthe77eyes)enhancementinpatients’visualacuity.Cystoidmacularedemaorretinaldetachmentwasnotobservedinanyofthepatientsduringfollow-upperiods.CONCLUSION:Thisnewtechniqueisexpectedtoimprovetheweaknessesthattheconventionalprocedureshavebyaddingtheprocesstocutoffvitreousstandsattachedwiththefragmentbythelasertothecircularapplication.

简介：首先叙述了光纤传输Nd3+:YAG激光的优点,接着分析了不同光纤和其传输Nd3+:YAG激光的特点.然后通过对光纤传输系统各部分的分析与设计,结合实际,设计了光纤耦合机构.最后,对来自于工件反射光问题提出了解决方案.

简介：Aneodymiumdopedyttriumaluminumgarnet(Nd:YAG)transparentceramicwasfabricatedbyasolidstatereactionmethodusingcommercialα-Al2O3,Y2O3,andNd2O3powdersasstartingmaterialsandtetraethylorthosilicate(TEOS)assinteringaid.ThemorphologyandmicrostructureofthenanopowdersandtheNd:YAGtransparentceramicwereinvestigated.ThefullydenseNd:YAGceramicwithanaveragegrainsizeof～20μmwasobtainedbyvacuumsinteringat1720°Cfor12h.Fewporesandgrain-boundaryphaseswereobserved.Thein-linetransmittanceoftheceramicwas81.5%at1064nm.

简介：Fortheestablishmentofdirectrevascularicationoftheischemicmyocardium,aNd:YAGlaserwithawavelengthof1060nmandanopiticfiberdiameterof500umwasusedtocreate20to25transmuralchannelsinthecentralischemicregionoftheleftventricleafterthecoronarywasligatured.Thechannelswerecreatedfromtheepicard1alsurfacetotheendocardiumandeachchannelreceivedabout64joulesofthe

简介：<正>常年性鼻炎包括常年性变应性鼻炎和常年性非变应性鼻炎。我科自1994年以来应用Nd:YAG激光治疗常年性鼻炎94例,疗效比较满意,现将有随访资料的70例患者总结如下。

简介：摘要目的研究NDYAG激光融脂的临床应用。方法用NDYAG激光经光纤导入皮下脂肪层，根据治疗部位选择精确治疗参数（波长1064nm,单脉冲能量150～500mJ,频率40～50Hz）后，与脂肪堆积部位的不同层次行扇形照射，在脂肪溶解后将其挤出或吸出并观察临床效果。自2008年3月至2010年3月，对21例面部、腋下、腹部等脂肪堆积的患者及吸脂术后吸出不足或局部凹凸不平患者进行激光融脂术。结果术后随访21例患者1～12个月。与术前比较，局部臃肿明显改善，外形良好，未见血肿，局部麻木，感染，局部硬结等并发症发生。术区无明显瘢痕。融脂后的吸出混合物中，血液成分明显少于传统的负压吸脂术，融脂后吸出恢复快，明显改善吸出部位凹凸不平现象。结论NDYAG激光具有确切的脂肪融脂作用，对局部小面积脂肪堆积治疗有优于传统负压吸脂法的临床应用价值。

简介：

简介：目的：观察倍频Nd：YAG激光联合YAG激光行周边虹膜切除术治疗急性闭角型青光眼的疗效及并发症。方法：本组共105例，其中临床前期91眼，先兆期32眼，间歇期46眼，均先使用倍频Nd：YAG激光在拟行周边虹膜切孔处分层射击，最后用YAG激光穿透造孔，随访12mo，观察疗效及并发症。结果：术后1～6h眼压暂时性升高，24h后眼压下降，虹膜周切孔均通畅，房角无粘连，3眼周切孔处局限性晶状体混浊。结论：倍频Nd：YAG激光联合YAC激光行周边虹膜切除术是防止闭角型青光眼急性发作的安全有效的手术。

简介：摘要目的探讨Q开关NdYAG激光联合红蓝光治疗痤疮的临床疗效。方法选取2014年6月至2015年6月我院收治的痤疮患者80例，将其随机分成两组，每组40例，观察组采用Q开关NdYAG激光联合红蓝光治疗，对照组进行单纯性的红蓝光治疗，观察两组的治疗效果。结果观察组的皮损评分明显低于对照组，治疗总有效率明显高于对照组（P<0.05），有统计学意义。结论对痤疮患者实施Q开关NdYAG激光联合红蓝光治疗，可以降低患者的皮损评分，提高治疗有效率，效果显著，可以临床推广。

简介：随着外生殖器尖锐湿疣发病的增多，尿道内尖锐湿疣已非临床少见。我院自1997年6月～2001年应用Nd：YAG激光治疗该病18例，报告如下。

简介：我院2004年5月至2006年5月，行Nd：YAG激光治疗后发性白内障（简称后发障）53例（61眼），疗效确切，报告如下。

简介：

简介：目的评价长脉冲Nd：YAG激光治疗龟头静脉畸形的疗效及安全性。方法10例龟头静脉畸形患者接受长脉冲1064nmNd：YAG激光治疗,7～8ms双脉宽、脉冲间隔20ms、120～140J/cm2能量密度、接触式冷却。治疗5～7次,治疗间隔1个月,疗程结束后随访12个月,观察并发症,并分五级评价病灶清除率。结果1例患者治疗时有轻度疼痛;所有患者治疗部位均出现暂时性红斑和水肿,无出血、感染、色素改变、瘢痕形成和勃起功能障碍等。随访12个月,全部患者龟头静脉畸形病灶完全清除,未见复发。结论长脉冲Nd：YAG激光能安全有效地治疗龟头静脉畸形,并发症少,可作为龟头静脉畸形的首选治疗方法之一。

简介：

简介：ApassivelyQ-switchedNd3+:YAGlaserwithcornercubeistheoreticallyandexperimentallystudied.Weanalyzethepolarizationvariationincavityandsimulatethepeakpower,pulseenergyandpulsewidthchangedwiththerotationangleofcornercubenumerically.Anexperimentismadetoverifythetheoreticalresults.Withrotatingtheangleofcornercubeabouttheaxisthevariationrangeofpeakpoweris1.77MW(from10.36to8.59MW),andthatofpulseenergyis14.9mJ(from159.5to174.4mJ),thefluctuationofpulsewidthis2.95ns.Theexperimentalresultsagreewiththetheoreticalanalysistotheextentofvariationrules.Themostdynamictostaticenergyratioof62.5%isachieved.

简介：

简介：TheenergymodelwasfoundedtocalculatethecriticalpowerofkeyholeformationbyusingthelimitprincipleinCW(continuouswave)Nd:YAGlaserdeeppenetrationweldingprocess.Themodelwasvalidatedbyexperiments.Theresultsshowthattherearetwoerrorsbetweenthecalculatedcriticalpowerofkeyholeformationandthatofexperiments:oneisthatthecalculatedresultsislessthanthoseofexperiments,whichiscausedbynotconsideringtheenergylossby!heatconductioninthemodelofkeyholeformation.Theotheristhatthereis0/9mmerrorbetweentheaxisofthecalculatedcurveofcriticalpowerwithlocationoflaserfocusandthatofexperimentalcurve,whichisinducedbytheexcursionoflaserfocusinlaserdeeppenetrationwelding.Atlast,thetwoerrorswererevisedaccordingtotheanalysesoftheerrors.

简介：

简介：ThisworkdemonstratestheNd:YAGwaveguidelaserasanefficientplatformforthebio-sensingofdextrosesolutionsandtumorcells.ThewaveguidewasfabricatedinanNd:YAGcrystalwiththecooperationofultrafastlaserwritingandionirradiation.ThelaseroscillationintheNd:YAGwaveguideisultrasensitivetotheexternalenvironmentofthewaveguide.Evenaweakdisturbanceleadstoalargevariationoftheoutputpowerofthelaser.Accordingtothisfeature,anNd:YAGwaveguidecoatedwithgrapheneandWSe2layersisusedassubstrateforthemicrofluidicchannel.WhenthemicroflowcrossestheNd:YAGwaveguide,thelaseroscillationinthewaveguideisdisturbedandinducesfluctuationoftheoutputlaser.Accordingtothefluctuation,themicroflowisdetectedwithasensitivityof10mW/RIU.