掺钕PLZT电光陶瓷的光辐射特性  

Optical Radiative Properties of Nd^(3+) Ions in Ferroelectric PLZT Ceramics

作　　者：黄抒洁[1] 郑志强[1] 刘志高[1] 冯卓宏[1] 刘王景 林琳[1] 洪锦绵[1] 明海[2] 

机构地区：[1]福建师范大学物理与光电信息科技学院,福建福州350007 [2]中国科学技术大学物理系,安徽合肥230026

出　　处：《福建师范大学学报（自然科学版）》2006年第1期44-48,共5页Journal of Fujian Normal University：Natural Science Edition

基　　金：国家自然科学基金资助项目(90201013);福建省自然科学基金资助项目(A0510014);福建省教育厅基金资助项目(JB03151JB04246)

摘　　要：研究了掺钕锆钛酸铅(PLZT)电光陶瓷的光学特性,利用Judd-O fe lt(J-O)理论计算该材料的强度参量:Ω2=0.7747×1-0 20cm2,Ω4=0.9856×1-0 20cm2,Ω6=0.9264×1-0 20cm2,并用强度参量计算了4F3/2亚稳态的辐射寿命(394μs)、受激发射截面iσj、荧光分支比,测量了4F3/2亚稳态的荧光寿命(168μs)并计算了该能级的荧光量子效率.同时还研究了该材料在803 nm激发下的上转换荧光特性.分析表明掺钕PLZT电光陶瓷在多功能器件、集成光学等方面有潜在的应用价值.The optical radiative properties of Nd^3＋ ions in transparent PLZT ceramics has been investigated. Based on Judd-Ofelt theory, The J-O intensity parameters are calculated to be Ω2 = 0. 7747 × 10^-20 cm^2, Ω4 = 0. 9856 × 10^-20 cm^2, Ω^6= 0. 9264× 10^-20 cm^2 from the absorption spectrum of Nd^3＋ doped PLZT. The J-O intensity parameters have also been used to calculate the radiative lifetime （394μs） of the ^4F3/2 metastable state. The stimulated emission cross-section a,j and the fluorescence branch ratios are also evaluated. They have also measured its fluorescence lifetime （168 μs）and calculated its quantum efficiency. Under 803 nm exciation, the properties of upconversion fluorescence are analyzed. The analysis reveals that Nd^3＋ doped PLZT ceramics have a great prospect to be applied for monolithic multifunction compact devices and integrated optic.

关 键 词：掺钕PLZT陶瓷 Judd—Ofelt理论 辐射特性 上转换 

分 类 号：O433[机械工程—光学工程]