新型激光晶體Nd：GdVO-,4-的研究.pdf

1、北京工業(yè)大學碩士學位論文新型激光晶體Nd：GdVO的研究姓名：馬會龍申請學位級別：碩士專業(yè)：材料學指導教師：臧競存2003.5.1ABSTRACTItisthattheemergenceandfastdevelopmentofthehighpowerlaserdiodeprovidedtermsforresearchingnew1asercrystalsNd：GdV04isamaterialofnewlasercrystalthatbe

2、endiscoveredunderthiskindofbackgroundInthistext，itintroducedthe1atestresearchtrendfor1asercrystalsandthedevelopmentprogressofNd：GdV04crystalGdy04crystalbelongstotetragonaIsystem，haszirconstructure，spacegroupisD強一14l／amdA

3、ccordingtotheculturalheritages，aseriesofdifferentNd3ion—dopedconcentrationsGdVO‘sin91ecrystalsweregrownbyCzochralskimethodwithtechniquepara皿eters一一pullingrateWas2mm／h，rotationratewas10rpmTheNd3ionsconcentrationswereobtai

4、nedbyICP—AESmethod，theefficientdistributioncoefficientofNd3wascalculatedaccordingtOitItsvaluewasO74，soitcanbedopedwithhighconcentrationsAtthes鯽etime，chemicaletchingtechniqueswereusedtorevealthedislocationstructureofcryst

5、als，thedislocationdensitywascounted，andhasbeenfoundedthatdislOcationreducedbyannealingAbsorptionspectraofNd：GdVOtweremeasuredatroomtemperature、Ithasawideabsorptionbandnear808nIIl，soitisfittobepumpedby808nmLDAndtheenergyl

6、eveIdistributionoftheNd舢ionsinGdV04wereconfirmed，Ndabsorptioncrosssectionwas326l10‘19cm2Fourpeakscanbeobservedinthefluorescencespectra，theintensityof1064咖luminescencewasthestrongestaInongthemWOrthyofremarkspeciallyisthat