In∶Yb∶Er∶LiNbO3晶体的生长和光谱性能

采用提拉法生长了掺0.25％（摩尔分数,下同）Yb2O3,0.25％ Er2O3和（0.5％、1.0％、1.5 ％） In2O3的3种同成分In∶Yb∶Er∶LiNbO3晶体.通过晶体的红外光谱,解释了In3＋,Yb3＋和Er3＋在晶体中的占位,由于Yb3＋和Er3＋离子的掺入,在In ∶Yb∶ Er∶ LiNbO3晶体中In3＋既占据Li位又部分占据Nb位,使2％In∶ Yb∶ Er∶ LiNbO3晶体达到阈值浓度.采用980 nm二极管激光器测试了In∶ Yb∶ Er∶ LiNbO3晶体上转换发射光谱.结果表明：晶体的绿光上转换发射中心波段位于525、550 nm处,分别相应于Er3＋的2...

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Published in硅酸盐学报 Vol. 42; no. 6; pp. 752 - 755
Main Author 孔文杨 代丽 郝树伟 毕方圆 杨春晖
Format Journal Article
LanguageChinese
Published 2014
Subjects
光谱性能
红外光谱
铟镱铒共掺铌酸锂晶体
阈值浓度
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Summary:采用提拉法生长了掺0.25％（摩尔分数,下同）Yb2O3,0.25％ Er2O3和（0.5％、1.0％、1.5 ％） In2O3的3种同成分In∶Yb∶Er∶LiNbO3晶体.通过晶体的红外光谱,解释了In3＋,Yb3＋和Er3＋在晶体中的占位,由于Yb3＋和Er3＋离子的掺入,在In ∶Yb∶ Er∶ LiNbO3晶体中In3＋既占据Li位又部分占据Nb位,使2％In∶ Yb∶ Er∶ LiNbO3晶体达到阈值浓度.采用980 nm二极管激光器测试了In∶ Yb∶ Er∶ LiNbO3晶体上转换发射光谱.结果表明：晶体的绿光上转换发射中心波段位于525、550 nm处,分别相应于Er3＋的2H11/2→4I15/2跃迁和4S3/2→4I15/2跃迁;上转换红光发射中心波段在660 nm处,对应Er3＋的4F9/2→4I15/2辐射跃迁.In3＋能提高Yb∶ Er∶ LiNbO3晶体的抗光损伤能力,改变Er3＋和Yb3＋的局部环境及Yb3＋对Er3＋的敏化作用,使得In∶ Yb∶ Er∶ LiNbO3晶体发光性能改变.
Bibliography:KONG Wenyang,DAI Li,HAO Shuwei,BI Fangyuan,YANG Chunhui（1.School of Chemical Engineering ＆ Technology, Harbin Institute of Technology, Harbin 150001, China;2.Applied Science College, Harbin University of Science and Technology, Harbin 150080, China）
Three types of In∶ Yb∶ Er ∶ LiNbO3 crystals doped with 0.25 ％ （mole fraction） Yb2 O3,0.25 ％ Er2 O3 and （0.5 ％,1.0％ and 1.5％）In2 O in congruent LiNbO3 crystals were prepared by the Czochralski technique.The In3 ＋,Yb3 ＋ and Er3 ＋ placeholder in the In∶ Yb∶ Er∶ LiNbO3 crystal was analyzed by infrared spectroscopy.The results indicate that In3 ＋ occupies the position of Li and the partial position of Nb in the In∶ Yb∶ Er∶ LiNbO3 crystals due to the incorporation of Yb3＋ and Er3＋ ions,thus leading to that the 2％In∶Yb∶ Er∶ LiNbO3 crystals reach a threshold concentration.The In∶ Yb∶ Er∶ LiNbO3 crystal upconversion emission spectra were examined with 980 nm diode laser.It is found that the green up conversion emission center wavelength is located at 525 and 550 nm,which ar
ISSN:0454-5648