硅酸盐学报
硅痠鹽學報
규산염학보
JOURNAL OF THE CHINESE CERAMIC SOCIETY
2007年
6期
765-769
,共5页
掺杂铌酸锂晶体%晶体缺陷%二波耦合%光折变性能%提拉法
摻雜鈮痠鋰晶體%晶體缺陷%二波耦閤%光摺變性能%提拉法
참잡니산리정체%정체결함%이파우합%광절변성능%제랍법
doped lithium niobate crystal%crystal defect structure%two-wave coupling%photorefractive property%Czochralski method
在氧化锂(Li2O)摩尔分数(下同)为48.6%～58%的LiNbO3中掺入0.1%的氧化铈(CeO2)和质量分数为0.03%的氧化铁(Fe2O3),用提拉法技术生长出高光学质量的具有不同摩尔比n(Li)/n(Nb)的Ce:Fe:LiNbO3晶体.通过紫外-可见光谱和红外光谱测试了晶体样品的组成和缺陷结构.通过二波耦合实验系统研究了Ce:Fe:LiNbO3晶体样品的光折变性能.结果表明:晶体样品随n(Li)/n(Nb)比增加,样品的衍射效率降低,动态范围降低,但是,全息响应速率和光折变灵敏度提高.
在氧化鋰(Li2O)摩爾分數(下同)為48.6%～58%的LiNbO3中摻入0.1%的氧化鈰(CeO2)和質量分數為0.03%的氧化鐵(Fe2O3),用提拉法技術生長齣高光學質量的具有不同摩爾比n(Li)/n(Nb)的Ce:Fe:LiNbO3晶體.通過紫外-可見光譜和紅外光譜測試瞭晶體樣品的組成和缺陷結構.通過二波耦閤實驗繫統研究瞭Ce:Fe:LiNbO3晶體樣品的光摺變性能.結果錶明:晶體樣品隨n(Li)/n(Nb)比增加,樣品的衍射效率降低,動態範圍降低,但是,全息響應速率和光摺變靈敏度提高.
재양화리(Li2O)마이분수(하동)위48.6%～58%적LiNbO3중참입0.1%적양화시(CeO2)화질량분수위0.03%적양화철(Fe2O3),용제랍법기술생장출고광학질량적구유불동마이비n(Li)/n(Nb)적Ce:Fe:LiNbO3정체.통과자외-가견광보화홍외광보측시료정체양품적조성화결함결구.통과이파우합실험계통연구료Ce:Fe:LiNbO3정체양품적광절변성능.결과표명:정체양품수n(Li)/n(Nb)비증가,양품적연사효솔강저,동태범위강저,단시,전식향응속솔화광절변령민도제고.
The Ce(0.1%in mole):Fe(0.03%in mass):LiNbO3 crystals with various[Li]/[Nb]ratios were grown by the Czochralski method from melts having compositions varying between 48.6%(in mole,the same below)and 58%Li2O.The crystal composition and defect structure were analyzed by the ultraviolet-visible(UV-Vis)and infrared(IR)spectroscopy.The photorefractive properties of the Ce:Fe:LiNbO3 crystals were experimentally studied by using the two-wave coupling method.The results of the two-wave coupling experiments show that as the molar ratio n(Li)/n(Nb)increased,the diffraction efficiency and dynamic range decreased,but the holographic response speed and photorefractive sensitivity increased.
