欢迎登录材料期刊网

材料期刊网

高级检索

在铌酸锂(LiNbO3,LN)中掺入摩尔分数为0.1%的CeO2,以提拉法从不同[Li]/[Nb]摩尔比([Li]/[Nb]=0.750,0.850,0.946,1.100)的熔体中生长出了Ce:LN晶体.测试了晶体的晶格常数、红外光谱和居里温度.结果表明:随着[Li]/[Nb]比的增加,晶体仍为三方的LN晶体,且晶格常数和晶胞体积没有发生大的变化,v(OH-)振动峰的位置依次向长波方向移动,居里温度依次增加,结构缺陷减少.由于Ce和[Li]/[Nb]比的协同作用,[Li]/[Nb]比为1.100的Ce:LN晶体已接近化学计量比,[Li]/[Nb]比为0.850的Ce:LN晶体的居里温度近似等于纯LN晶体.利用二波耦合光路测试了晶体的衍射效率、写入时间和擦除时间,计算了晶体的光折变灵敏度及动态范围.测试了晶体的抗光致散射能力,结果表明:[Li]/[Nb]比越高的Ce:LN晶体的光折变性能越好.并分析了不同[Li]/[Nb]比Ce:LN晶体光折变性能增强的机理.

参考文献

[1] 吕衍秋,袁多荣,魏学成,吕孟凯,许东,王重海,孟宪谦.以K2O助熔剂生长LiNbO3晶体的研究[J].硅酸盐通报,2004(02):77-79.
[2] D. Jaque;J. Capmany;J.A. Sanz Garcia .Nd~3+ ion based self frequency doubling solid state lasers[J].Optical materials,1999(1):147-157.
[3] Furukawa Y.;Takekawa S.;Niwa K.;Yajima Y.;Iyi N. Mnushkina I.;Guggenheim P.;Martin JM.;Kitamura K. .The correlation of MgO-doped near-stoichiometric LiNbO3 composition to the defect structure[J].Journal of Crystal Growth,2000(1/4):230-236.
[4] Sun DL;Hang Y;Zhang LH;Luo GZ;Zhu SN;Lim PK;Hung WW .Growth of near-stoichiometric LiNbO3 crystals and Li2O contents determination[J].Crystal Research and Technology: Journal of Experimental and Industrial Crystallography,2004(6):511-515.
[5] Chunhui Yang;Yequan Zhao;Rui Wang .Studies of photorefractive crystals of double-doped Ce,Fe:LiNbO_(3)[J].Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter,2000(1/3):247-252.
[6] Hesselink L;Sergei S Orlov et al.Photorefractive Materials for Nonvolatile Volume Holographic Data Storage[J].Science,1998,292(11):1089-1094.
[7] Zheng W.;Guan CX.;Zhao LC.;Xu YH. .The correlation of doping ions to holographic storage properties of Mg : Mn : Fe : LiNbO3 crystals[J].The journal of physics and chemistry of solids,2003(8):1371-1374.
[8] Mok F H .Syhtem Metric for Holographic Memory Systems[J].Journal of Opt Lett,1996,21(12):896-898.
[9] 郑威 .镁锰铁掺杂铌酸锂晶体生长与缺陷及光全息存储性能[D].哈尔滨工业大学,2005.
上一张 下一张
上一张 下一张
计量
  • 下载量()
  • 访问量()
文章评分
  • 您的评分:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%