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1、APPLIEDPHYSICSLETTERS92,1411122008InfraredquantumcuttinginTb3+,Yb3+codopedtransparentglassceramicscontainingCaF2nanocrystalsaSongYe,BinZhu,JingxinChen,JinLuo,andJianRongQiuStateKeyLaboratoryofSiliconMaterials,ZhejiangUniversity,Hangzhou310027,People’sRepublicofCh
2、inaReceived8January2008;accepted19March2008;publishedonline10April2008Tb3+Yb3+codopedtransparentoxyfluorideglassceramicscontainingCaFnanocrystalswere2synthesized.TheformationofCaF2nanocrystalsintheglassceramicswasconfirmedbyx-raydiffractionandhighresolutiontransmiss
3、ionelectronmicroscopy.TheincorporationofTb3+andYb3+intoCaFnanocrystallatticewasconfirmedbyenergydispersivespectroscopy.Infrared2quantumcuttinginvolvingYb3+9501100nm2F→2Femissionwasachieveduponthe5/27/2excitationof5DenergylevelofTb3+at484nm.Thephotoluminescenceprope
4、rtieshavebeen4studiedfortheseglassceramics.Yb3+concentrationdependentquantumefficiencywascalculated,andthemaximumefficiencyapproaches155%beforereachingconcentrationquenchingthreshold.©2008AmericanInstituteofPhysics.DOI:10.1063/1.2907496Rareearthdopedglasseshavebeene
5、xtensivelyinvesti-Wehavepreparedoxyfluorideglasseswithcompositionsgatedduetotheirpotentialapplicationsinfiberamplifiers,of60SiO20AlO20CaF0.3Tb3+xYb3+x=0,4,6,2232solidstatelasers,andthree-dimensionalfull-color10,14,18,22,26,and30.Inthisletter,wenoteAGxasthe15as-madegl
6、assandGCxastheglassceramics,wherexisthedisplays.Amongthem,oxyfluorideglassceramicsareabovementionedmolarconcentrationofYb3+.Theglassmoreappropriateforpracticalapplicationsduetotheirlowphononenergiescomparedtooxideglassesaswellasexcel-sampleswerepreparedbyusinghighpur
7、itySiO2,Al2O3,lentchemicaldurabilityandmechanicalstrengthcomparedCaF2,TbF3,andYbF3asrawmaterials,whichwerehomo-tofluorideglasses.Theupconversionluminescenceingeneouslymixedandmeltedat1400°Cfor30mininaTb3+Yb3+codopedglasseshasbeenwidelystudiedinrela-coveredcorundumcru
8、cibleinair.ThemeltswerepouredtiontothecooperativeenergytransferfromtwoYb3+ionstoontoacoldbrassplateandthenpressedbyanotherplate.oneTb3+ion
