铒、镱共掺硼硅酸盐玻璃的光致荧光及增益特性研究

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1、大连理工大学硕士学位论文铒、镱共掺硼硅酸盐玻璃的光致荧光及增益特性研究姓名：彭扬申请学位级别：硕士专业：凝聚态物理指导教师：张庆瑜20071221铒、镱共掺硼硅酸盐玻璃的光致荧光及增益特性研究StudyonPhotoluminescenceandOpticalGainPropertiesofEr／YbCo·-dopedBorate·-silicateGlassAbstractEr-dopedglasshasbeenpayedmuchattention．duetothetransition4ln旷≯lY5／2ofEpcangenerate1．53岬ph

2、otoluminescencewhichcorrespondtothemaximumtransparencyofsilica-basedopticalfibers．Nowadays，maximizingtheopticalpropertiesofEP+becomesahotspot．Er／Ybco-dopedsystemhasbeenfoundtobealleffectivemethodtoenhancethegainduetotheexcellentsensitizingabilityofYb”．Therefore．itisofimportance

3、tostudythephotoluminescencepropertiesofEr／Ybco—dopedsysteminvariousglasses．Inthisdissertation．Er／Ybco—dopedborate-silicateglasswith0．5tool％Er203werefabricatedbysolidreactionmethod．TheconcentrationofYb203wasintherangeof0．0m01％to5．5t001％．Theabsorptionandphotoluminescence口L)spedct

4、ra,togetherwiththelifetimeofEr'+：113／2weremeasared．Themajorpointsofthisworkaresummarizedasfollows：neabsorptioncrosssectionofEr3+werecalculated．duetotheabsorptionspedctra．nesensitizingeffectofYb”hasbeenapprovedandthcY矿+CO—dopingeffectOntheabsorptionspedctraofEPhasbeenresearched．

5、TheopticalparameterssuchasJudd-OfeltintensityparameterandradiativelifetimeofE，+■3／2werecalculatedbyJudd—Ofelttheory．UsingJudd一(Meltintensityparameter，weanalyzedthelocalenvironmentofEr3+intheglass．ncdependenceofPLintensityon妒concentrationhasbeeninvestigatedandthebroadeningofPLsp

6、ectraowingtotheincreasingofYbj+hasbeenobserved．WiththepurposeoffindingthefactorsaffectingthePLproperties，wemeasuredtheup-conversionspectaandcalculatedtheenergytransferratebetweenE，+and妒byInokuti—Hirayamaexchangemechanism．Also，thedependenceoftheparticlepopulationontheE，+·■搬level

7、onYb203concentrationwasstudied．InordertoinvestigatethegainpropertyofEr／Ybco-dopedwavegaideamplifier，themteequationmodelforEr／Ybco·dopedsystemandthepropagationequationofthewaveguidehavebeenestablishedbasedonthefirst-handeddataobtainedfromthemeasurements．Thedependenceofopticalgai

8、non肠03concentration,pumppower,waveguidelengthandwavega