掺杂对磷酸钛氧钾单晶拉曼光谱的影响  

Raman Scattering of Doped Potassium Titanyl Phosphate Crystal 

作　　者：李丽霞[1] 王继场[1] 魏景谦[1] 江守礼[1] 刘跃岗[1] 

机构地区：[1]山东大学环境工程系晶体材料国家重点实验室

出　　处：《人工晶体学报》1998年第4期33-36,共4页Journal of Synthetic Crystals

基　　金：山东大学晶体材料国家重点实验室开放课题

摘　　要：本文研究了掺金属元素Ｃｅ和Ｎｂ的磷酸钛氧钾（ＫＴｉＯＰＯ４，简称ＫＴＰ）晶体在不同几何配置下的拉曼光散射。讨论了掺杂对ＫＴＰ拉曼光谱的影响。拉曼光谱大的散射强度说明晶体有大的非线性光学特性。从掺铈和掺铌ＫＴＰ中氧八面体和氧四面体相对于ＫＴＰ的频率位移可知，稀土金属离子Ｃｅ比Ｎｂ离子对ＫＴＰ拉曼光谱的影响更大。In this paper,the Raman spectra of doped KTP crystals in different arrangements have been reported and the effect of dopping on the Raman scattering has been discussed.The large intensity of scattering reveals the large nonlinear optic character.From the frequency shift of PO 4 tetrahedron and TiO 6 octahedron of doped KTP we can see that the Ce ion has more stronger effect on the Raman scattering of KTP than Nb ion has.

关 键 词：拉曼散射 KTP晶体 掺杂离子 非线性光学晶体 

分 类 号：O734[理学—晶体学]