%0 Journal Article
%T Effect of lithium-potassium mixed alkali on spectroscopic properties of Er3+-doped aluminophosphate glasses<br>Effect of lithium-potassium mixed alkali on spectroscopic properties of Er^3＋-doped aluminophosphate glasses
%A Fang Yong-Zheng
%A Liao Mei-Song
%A Hu Li-Li
%A <br>房永征
%A 廖梅松
%A 胡丽丽
%J 中国物理 B
%D 2007
%I 
%X Er$^{3+}$-doped lithium-potassium mixed alkali aluminophosphate glasses belonging to the oxide system $x$K$_2$O-(15-$x$)Li$_2$O-4B$_2$O$_3$-11Al$_2$O$_3$-5BaO-65P$_2$O$_5$ are obtained in a semi-continuous melting quenching process. Spectroscopic properties of Er$^{3+}$-doped glass matrix have been analysed by fitting the experimental data with the standard Judd--Ofelt theory. It is observed that Judd--Ofelt intensity parameters ${\it\Omega}_ t (t= 2$, 4 and 6) of Er$^{3+}$ change when the second alkali is introduced into glass matrix. The variation of line strength $S_{\rm ed}$$^4$I$_{13/2}$,$^4$I$_{15/2}$] follows the same trend as that of the ${\it\Omega}_6$ parameter. The effect of mixed alkali on the spectroscopic properties of the aluminophosphate glasses, such as absorption cross-section, stimulated emission cross-section, spontaneous emission probability, branching ratio and the radiative lifetime, has also been investigated in this paper.
%K non-crystalline materials
%K mixed alkali
%K radiative lifetime
%K Judd--Ofelt theory<br>锂-钾混合碱
%K 铒掺杂
%K 磷酸铝玻璃
%K 光谱特性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=51EC29F0F1FE47963840C5F624189655&yid=A732AF04DDA03BB3&vid=7801E6FC5AE9020C&iid=B31275AF3241DB2D&sid=7BDE0FB5072797C1&eid=6200939EB7D4F462&journal_id=1009-1963&journal_name=中国物理&referenced_num=0&reference_num=28