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近化学计量比Fe:Mg:LiNbO₃晶体生长与其存储性能

GROWTH AND STORAGE PROPERTIES OF STOICHIOMETRIC Fe:Mg:LiNbO₃ CRYSTALS

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【Author】 WANG Yijie1,LIU Wei1,FAN Yexia2,YU Feng1,SUN Liang3,GUAN Chengxiang4,XU Yuheng3(1.Applied Science College,Harbin University of Science and Technology,Harbin 150080;2.School of Material Science and Engineering,Harbin University of Science and Technology,Harbin 150080;3.Department of Applied Chemistry,Harbin Institute of Technology,Harbin 150001;4.Department of Physics,Harbin Normal University,Harbin 150080,China)

【机构】哈尔滨理工大学应用科学学院；哈尔滨理工大学材料科学与工程学院；哈尔滨工业大学应用化学系；哈尔滨师范大学物理系；

【摘要】在LiNbO3(LN)中分别掺入0.5%(摩尔分数,下同),1%和2% MgO,0.03%(质量分数)Fe2O3,配料中n(Li)/n(Nb)=1.38,采用顶部籽晶溶液生长法生长近化学计量比Fe:Mg:LiNbO3(near-stoichiometric Fe:Mg:LiNbO3,Fe:Mg:SLN)晶体。测试了晶体的红外光谱、抗光损伤能力和存储性能。结果表明:Fe:2%Mg:LN晶体的OH-吸收峰移到3535cm-1,抗光损伤能力比Fe:LN提高3个数量级。Fe:0.5%Mg:LN晶体的灵敏度、动态范围和抗光损伤能力比Fe:LN晶体分别高2.5倍,2倍和1个数量级。以Fe:2%Mg:LN晶体和Fe:LN晶体分别作为存储介质,进行大容量存储实验。在一个公共体积内实现1200幅体全息图的存储。Fe:2%Mg:LN晶体的存储质量优于Fe:LN晶体。更多还原

【Abstract】 Near stoichiometric Fe:Mg:LiNbO3(Mg:Fe:LN) series crystals were grown by the top seeded solution growth(TSSG) method in LiNbO3(LN) melt with n(Li)/n(Nb) = 1.38 doped with 0,0.5%(in mole,the same below),1% and 2% MgO and 0.03%(in mass) Fe2O3,respectively.The infrared spectra,optical damage resistance and storage properties of Mg:Fe:LN crystals were measured.The results indicate that the OH-absorption peak of Fe:2%Mg:LN crystal shifts to 3 535 cm-1,and the optical damage resistance is higher by three orders of magnitude than that of Fe:LN crystal.The sensitivity,the dynamic range and the optical damage resistance of Fe:0.5%Mg:LN crystal are 2.5 times,2 times and one order of magnitude higher than that of Fe:LN crystal,respectively.Using the Fe:0.5%Mg:LN crystal and Fe:LN crystal as storage medium respectively,the storage of 1 200 images is realized in one common volume.The storage quality of the Fe:0.5% Mg:LN crystal is preferable to Fe:LN crystal.更多还原