[透明光学树脂中 Eu(3+) 离子辐射参数的理论与实验研究]

[Study on the theory and experiments of radiative parameters of the Eu(3+) ion in transparent optical resin].

作者信息

Wang Fu-Xiang, Pei Song-Hao, Peng Wei-Xian, Wang Dong-Mei, Yang Bai, Wang Feng-Min, Li Xin-Guo

机构信息

Department of Physics, Jilin University, Changchun 130023, China.

出版信息

Guang Pu Xue Yu Guang Pu Fen Xi. 2006 Feb;26(2):248-50.

PMID:16826898

Abstract

The optical properties of a transparent optical resin (HMA/ST) containing ternary rare earth complex are reported. Based on Judd-Ofelt (J-O) theory, the J-O parameters were calculated to be omega2 = 10.139 4 x 10(-20) cm2, omega4 = 3.810 9 x 10(-20) cm2, omega6 = 9.050 7 x 10(-20) cm2 by using the emission spectrum of optical resin containing Eu (TTA)3 phen-0.31 wt%. The J-O parameters were used to calculate the total radiative transition rate (456.6 s(-1)) and radiative lifetime (2 190.1 micros) of the excited state 5D0. The stimulated emission cross-sections a and the fluorescence branch ratio beta parameters for the transitions of 5D0 --> 7F(J), (where J' = 1, 2, 4 and 6) were also evaluated. By analyzing the calculated J-O parameters, it is concluded that the excited state of Eu3+ in optical resin has a long radiative lifetime and large emission cross-section, which shows that the optical resin containing rare earth complex can be used for stimulated emission amplification or as a laser material.

摘要

报道了一种含有三元稀土配合物的透明光学树脂（HMA/ST）的光学性质。基于Judd-Ofelt（J-O）理论，利用含0.31 wt% Eu（TTA）3 phen的光学树脂的发射光谱，计算出J-O参数为ω2 = 10.139 4×10−20 cm2，ω4 = 3.810 9×10−20 cm2，ω6 = 9.050 7×10−20 cm2。利用J-O参数计算了激发态5D0的总辐射跃迁速率（456.6 s−1）和辐射寿命（2 190.1 μs）。还评估了5D0→7F（J）（其中J' = 1、2、4和6）跃迁的受激发射截面α和荧光分支比β参数。通过分析计算得到的J-O参数，得出光学树脂中Eu3+的激发态具有较长的辐射寿命和较大的发射截面，这表明含稀土配合物的光学树脂可用于受激发射放大或作为激光材料。