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1、OpticsCommunications273(2007)238–241www.elsevier.com/locate/optcom3+InvestigationofthespectroscopicpropertiesofYb-dopedyttriumlanthanumoxidetransparentceramicaa,*abQ.H.Yang,J.Ding,H.W.Zhang,J.XuaSchoolofMaterialsScienceandEngineering,ShanghaiUniversity,Shanghai200072,PRChinab
2、ShanghaiInstituteofOpticsandFineMechanics,TheChineseAcademyofSciences,Shanghai201800,PRChinaReceived2April2006;receivedinrevisedform26November2006;accepted27December2006AbstractSpectroscopicpropertiesof(Y0.9xLa0.1Ybx)2O3transparentceramicwerestudied.Twomainabsorptionpeaksoft
3、hespecimenarecenteredat940and970nm,whicharesuitableforInGaAslaserdiodepumping.Themainemissionpeakswerelocatedat1032and1075nmwithlargeremissioncross-sectionandlongerfluorescencelifetimethanthoseofYb:Y2O3.Thesepropertiesof(Y0.9xLa0.1Ybx)2O3transparentceramicarefavorabletoachiev
4、ehighefficiencyandhighpowerlaseroutput.Ó2007ElsevierB.V.Allrightsreserved.PACS:42.70.Hj;42.55.Xi3+Keywords:Yttriumlanthanumoxide;Ceramiclaser;Transparentceramics;Spectroscopicproperty;Ybdoped1.IntroductionYAG,andtheirthermalexpansioncoefficientsareverysimilar.Itis,however,extreme
5、lydifficulttofabricatehigh3+Recently,YbdopedlasermaterialshaveattractedqualityY2O3singlecrystalbecauseofitshighmeltingpointconsiderableattentionduetothedevelopmentofhigh-(2430°C)andthepolymorphicphasefromCtoahighpower,high-efficientandhigh-temperaturelaserdiode.temperaturehexago
6、nalphaseHatabout2350°C[2–4].3+YbionshaveaverysimpleelectronicstructurewithonlyIn1978,Rohdeetal.successfullyfabricatedY2O3trans-1twomanifoldsseparatedbyabout1000cm.Therefore,parentceramicbyaddingLa2O3assinteringaid.Theyuti-thereisnointrinsicprocessforconcentrationquenching.li
7、zedthephasetransitionfromCtoHatextremelyhigh3+Owingtoperceptibleelectron–phononinteraction,Yb-temperature(2150°C)toretardgraingrowththerebydopedmaterialshavebroadabsorptioninnear-IRwhichallowingsinteringtoproceeduntilalowporosityhighissuitableforlaserdiode(LD)pumping.Thebroa
8、dlumi-transparencybodyisachieved,thenloweredtemperature22nescenceban
