Mg^(2+)浓度对Ce:Fe:LiNbO_3晶体光谱性能的影响  

The Spectrum Properties of LiNbO_3 Crystals Dependence of the Contents of Mg^(2+)

作　　者：代丽[1] 王义杰[1] 杨飞[1] 刘江平[2] 

机构地区：[1]哈尔滨理工大学应用科学学院,黑龙江哈尔滨150080 [2]哈尔滨工业大学材料科学与工程学院,黑龙江哈尔滨150001

出　　处：《哈尔滨理工大学学报》2007年第1期47-49,共3页Journal of Harbin University of Science and Technology

摘　　要：为探讨Mg2+浓度对Ce:Fe:LiNbO3晶体光谱性能的影响,在Ce:Fe:LiNbO3中掺入摩尔浓度分别为0%、2%、4%和6%的MgO,以提拉法技术生长了Mg:Ce:Fe:LiNbO3晶体.测试了Mg:Ce:Fe:LiNbO3的红外透射光谱.紫外可见吸收光谱的吸收边曲线随着晶体原料中镁浓度的增大而向短波长方向移动,当镁的摩尔浓度达到6%时,样品又开始移向长波方向.最后,探讨了Mg2+浓度达到阈值后,吸收峰的变化,并分析了镁离子在晶体中的占位.To study the spectrum properties of Ce：Fe： LiNbO3crystals dependence of the contents of Mg^2＋ , Ce：Fe：LiNbO3 crystals doped with MgO were grown with the Czochralski method and the contents of MgO are 0mol% ,2mo1% ,4mo1% and 6mo1% respectively. The infrared transmission spectra and the UV -Visible absorption spectra of Mg ： Ce ： Fe ： LiNbO3 crystals were measured. Absorption edge shifts towards the short wavelength with the increase of concentration of Mg^2＋ , and shifts towards the long wavelength when the concentration of Mg2^＋ reaches 6mol%. The change of absorption peak when the Mg^2＋ doping concentration reached the threshold concentration was studied, and the Mg^2＋ sites in the LiNbO3 crystals were analyzed.

关 键 词：铌酸锂晶体 红外透射光谱 紫外可见吸收光谱 

分 类 号：TP333.4[自动化与计算机技术—计算机系统结构]