三摻鎂鈰銅同成分鈮酸鋰結構與光折變性能.pdf

1、哈爾濱工業(yè)大學碩士學位論文三摻鎂鈰銅同成分鈮酸鋰結構與光折變性能姓名：余桐柏申請學位級別：碩士專業(yè)：材料物理與化學指導教師：趙連城20050601墮塵堡三些查蘭!：蘭堡圭蘭堡簍圣AbstractMg：Ce：Cu：CLNcongruentLithiumNiobatesinglecrystalsweregrownbytheCzochralskimethodintheatmosphereenvironment，andtheas—growthc

2、rystalshavenomacroscopicdefectsandhaveaperfectopticalhomogeneityTheoptimumtechnologicalconditionsforgrowingCOdopedMg：Ce：Cu：CLNsinglecrystalswerealsodeterminedTheresultsfromtheXRDexperimentofthesinglecrystalsshowedthatthe

3、CO—dopedMg：Ce：Cu：CLNcrystalsholdSalT!elatticestructureaspureCLNcrystals，butthelatticeconstantsoftheCOdopedMg：Ce：Cu：CLNcrystalshadvariedslightly，andundertheuniformMgconcentration，thecrystalconstantsdecreaseasCe，Cuconcentr

4、ationincreasedByinvestigatingtheUVVisableabsorptionspectraandIRabsorptionspectra，theoccupyingmechanismofthedopantswasstudyedThetransmissionfaculaisdirectlyobservedtostudytheopticaldamageresistanceoftheCO—dopedMg：Ce：Cu：CL

5、NcrystalsThedependenceoftheopticaldamageresistanceoftheCO—dopedMg：Ce：Cu：CLNcrystalsontheCe，CuconcentrationwasstudiedTheresultshowsthat，thoughtheMgionsconcentrationhasn’treachedthethresholdvalue，theopticaldamageresistance

6、oftheCO—dopedMg：Ce：Cu：CLNcrystalsiSratherhighUsingtwobeamcouplingexperiment，thedependenceofthediffractionefficiencyandtheresponsetimeoftheCO—dopedMg：Ce：Cu：CLNcrystalsontheCe，Cuconcentrationandtheposttreatmentwasstudiedsy

7、stematicallyTheresultsindicatedthatthediffractionefficiencyincreaseswiththeincreaseofCeCuconcentration，buttheresponsetimedecreasesThewritingtimeoftheMg：Ce：Cu：CLNcrystalsdecreasedasthecrystalwasannealedTheannealingtreatme