کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5399524 | 1505903 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On observation of the downconversion mechanism in Er3+/Yb3+ co-doped tellurite glass using thermal and optical parameters
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
In this work we report the observed downconversion (DC) mechanism in Er3+/Yb3+-codoped tellurite glasses (in mol%, 80TeO2-10Li2O-10TiO2). The samples were synthesized by the conventional melt-quenching method and then studied using optical spectroscopy and thermal lens spectroscopy (TLS). These characterizations enabled investigation of the radiative and nonradiative processes involved in energy transfer from erbium to ytterbium. The visible Er3+ fluorescence intensities decreased as a function of the Yb3+ concentration, and there was a corresponding increase in the ytterbium emission at around 980Â nm. Simultaneously, there was a reduction in the heat-generated due nonradiative decays (~21%) when ytterbium was added. This temperature change was measured by TLS measurements and the results corroborate with the indicated by spectroscopic interpretation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 157, January 2015, Pages 365-370
Journal: Journal of Luminescence - Volume 157, January 2015, Pages 365-370
نویسندگان
M.S. Figueiredo, F.A. Santos, K. Yukimitu, J.C.S. Moraes, L.A.O. Nunes, L.H.C. Andrade, S.M. Lima,