Spectroscopic Properties of Er~ (3+), Yb^(3+)-Codoped Tellurite Glass-Ceramics Containing Nanocrystals  

作　　者：Zhou Gang Dai Shixun Yu Chunlei Zhang Junjie Hu Lili Jiang Zhonghong 

机构地区：[1]Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800,China [2]Graduate School of Chinese Academy of Sciences, Beijing 100049, China

出　　处：《Journal of Rare Earths》2005年第5期541-541,共1页稀土学报（英文版）

摘　　要：A transparent tellufite glass-ceramic containing nanocrystals based on the composition of 15Li2O-15Nb2O5-7OTeO2-0. 1ErEr2O3-0. 4Yb2O3 （mol%）was prepared by using a two-step heat-treatment. The XRD patterns show that the composition of crystals in glass-ceramics is possibly Yb6Te5O19.2 or Er6Te5O19.2, and the dimension of crystals is about 55 nm. The Judd-Ofeh parameters, Ωt, （t = 2, 4, 6）, and the spontaneous emission probability of Er^3＋ in glass and glass-ceramics were calculated from optical absorption spectra. The absorption cross section of Er^3 ：^4I15/2→I13/2 and the emission cross section of Er^3 ＋ ：^4I15/2→I13/2 in two samples were also calculated. Raman scattering spectra of glass and glass-ceramic were measured, the fluorescence spectra and the upconversion spectra of Er^3 ＋ ion in glass and glass-ceramic were compared.A transparent tellufite glass-ceramic containing nanocrystals based on the composition of 15Li2O-15Nb2O5-7OTeO2-0. 1ErEr2O3-0. 4Yb2O3 （mol%）was prepared by using a two-step heat-treatment. The XRD patterns show that the composition of crystals in glass-ceramics is possibly Yb6Te5O19.2 or Er6Te5O19.2, and the dimension of crystals is about 55 nm. The Judd-Ofeh parameters, Ωt, （t = 2, 4, 6）, and the spontaneous emission probability of Er^3＋ in glass and glass-ceramics were calculated from optical absorption spectra. The absorption cross section of Er^3 ：^4I15/2→I13/2 and the emission cross section of Er^3 ＋ ：^4I15/2→I13/2 in two samples were also calculated. Raman scattering spectra of glass and glass-ceramic were measured, the fluorescence spectra and the upconversion spectra of Er^3 ＋ ion in glass and glass-ceramic were compared.

关 键 词：nanocrystal tellurite glass GLASS-CERAMIC Er^3 ＋ ion spectroscopy rare earths 

分 类 号：TQ174[化学工程—陶瓷工业] TQ171[化学工程—硅酸盐工业]