Mg：Ru：Fe：LiNbO3晶体生长及蓝光双波长非挥发存储性能  

Growth and Blue Light Dual Wavelength Nonvolatile Storage Properties of Mg:Ru:Fe:LiNbO_3 Crystals

作　　者：徐超[1] 冷雪松[1] 王义杰[2] 许磊[1] 张春雷[3] 徐玉恒[1] 

机构地区：[1]哈尔滨工业大学化工学院,哈尔滨150001 [2]哈尔滨理工大学应用科学学院,哈尔滨150080 [3]东北林业大学,生物质材料科学与技术教育部重点实验室,哈尔滨150040

出　　处：《硅酸盐学报》2011年第11期1872-1876,共5页Journal of The Chinese Ceramic Society

基　　金：黑龙江省教育厅科学研究基金(11551099)资助项目

摘　　要：在同成分LiNbO3中,掺入摩尔分数为0～3%的MgO,0.09%RuO2和0.03%Fe2O3,采用提拉法生长Mg:Ru:Fe:LiNbO3晶体。以Kr+激光器(476 nm)和He-Ne激光器(633 nm)作光源测试Mg:Ru:Fe:LiNbO3晶体的光激载流子类型和光折变全息存储性能。结果表明:在蓝光(476 nm)照射下,Mg:Ru:Fe:LiNbO3晶体载流子以空穴为主,在红光(633 nm)照射下,载流子以电子为主;蓝光的光折变存储性能优于红光的。3%Mg:Ru:Fe:LiNbO3晶体双波长非挥发存储的最大衍射效率、固定衍射效率、响应时间和灵敏度分别达到77%、58%、155 s和0.189 cm/J,优于Ru:Fe:LiNbO3晶体,也优于双色非挥发存储性能。探讨了蓝光光折变全息存储性能和双波长非挥发存储性能增强的机理。The Mg：Ru：Fe：LiNbO3 crystal doped with MgO of 0 and 3%（in mass,the same below）,RuO2 of 0.09% and Fe2O3 of 0.03% was synthesized by the Czochralski method.The light-exciting carriers and photorefractive holographic storage properties of the Mg：Ru：Fe：LiNbO3 crystal was examined using Kr＋ laser（476 nm） and He-Ne laser（633 nm） as light sources.The results indicate that the holes are the dominant charge carriers under blue light irradiation with 476 nm,and the electrons are the dominant charge carriers under red light irradiation with 633 nm.The photorefractive storage properties of blue light were better than those of red light.The maximum diffraction efficiency,fixing diffraction efficiency,response time and sensitivity of the dual wavelength nonvolatile storage properties of the 3%Mg：Ru：Fe：LiNbO3 crystal were 77%,58%,155 s and 0.189 cm/J,respectively,which were better than those of Ru：Fe：LiNbO3 crystal under the same experimental condition,and also better than experimental result of two color nonvola-tile storage properties.The mechanism for the enhancement of blue light photorefractive holographic storage properties and dual wavelength nonvolatile storage properties was also discussed

关 键 词：铌酸锂晶体 镁 钌 铁 双波长非挥发存储 载流子 衍射效率:响应时间 

分 类 号：O734[理学—晶体学]