%0 Journal Article
%T Spectral Properties and Parameters Calculation of Er:Ligdf&lt;sub&gt;4&lt;/sub&gt; Crystal
%A Chun Li
%A Ying Zhang
%A Xuejian Zhang
%A Dongwei Miao
%A Hai Lin
%A Mauro. Tonelli
%A Fanming Zeng
%A Jinghe Liu
%J Materials Sciences and Applications
%P 1161-1165
%@ 2153-1188
%D 2011
%I Scientific Research Publishing
%R 10.4236/msa.2011.28156
%X The absorption and fluorescence spectra of Er&lt;sup&gt;3+&lt;/sup&gt;:LiGdF&lt;sub&gt;4&lt;/sub&gt; crystal was measured at room temperature. Base on the Judd-Ofelt theory, the intensity parameters of Er&lt;sup&gt;3+&lt;/sup&gt; in LiGdF&lt;sub&gt;4&lt;/sub&gt; crystal were determined, 次&lt;sub&gt;2&lt;/sub&gt;=0.905&#215;10&lt;sup&gt;-20&lt;/sup&gt;cm&lt;sup&gt;2&lt;/sup&gt;, 次&lt;sub&gt;4&lt;/sub&gt;=2.47&#215;10&lt;sup&gt;-20&lt;/sup&gt;cm&lt;sup&gt;2&lt;/sup&gt; and 次&lt;sub&gt;6&lt;/sub&gt;=4.92&#215;10&lt;sup&gt;-20&lt;/sup&gt;cm&lt;sup&gt;2&lt;/sup&gt;. The values of the radiative transition probabilities, branching ratios, integrated emission cross-section and radiative lifetimes of excited states of Er&lt;sup&gt;3+&lt;/sup&gt; in LiGdF&lt;sub&gt;4&lt;/sub&gt; crystal were calculated. The stimulated emission cross-section was also evaluated for the &lt;sup&gt;4&lt;/sup&gt;&lt;i&gt;I&lt;/i&gt;&lt;sub&gt;13/2&lt;/sub&gt;↙&lt;sup&gt;4&lt;/sup&gt;&lt;i&gt;I1&lt;/i&gt;&lt;sub&gt;5/2&lt;/sub&gt; transitions. In comparisons with other Er&lt;sup&gt;3+&lt;/sup&gt; doped laser crystals, Er&lt;sup&gt;3+&lt;/sup&gt;:LiGdF&lt;sub&gt;4&lt;/sub&gt; crystal has potential as a promising laser crystal.
%K Erbium-Doped Yttrium Lithium Gadolinium Fluoride Crystal
%K Absorption Spectrum
%K Judd-Ofelt Theory
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=6723