کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5442910 | 1510771 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fluorescence quantum yield of Yb3+-doped tellurite glasses determined by thermal lens spectroscopy
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this work, the combination of three different thermal lens spectroscopic methodologies was used to better determine the fluorescence quantum yield and to observe the concentration quenching in Yb3+-doped binary tellurite glasses (in mol%, 80TeO2 - 20Li2O and 80TeO2 - 20WO3). 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 the ytterbium doped systems. High fluorescence quantum yield was obtained for low Yb3+ doping (>90%), and in both glasses the Yb3+ presented concentration quenching mainly caused by impurities, host-ion interaction and OHâ vibrations. The observations suggested that there is a possibility of doping the glasses with higher Yb concentration (>1.6Â ÃÂ 1021Â ions/cm3) with low reduction of the quantum yield.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 63, January 2017, Pages 19-25
Journal: Optical Materials - Volume 63, January 2017, Pages 19-25
نویسندگان
S.M. Lima, A.K.R. Souza, A.P. Langaro, J.R. Silva, F.B. Costa, J.C.S. Moraes, M.S. Figueiredo, F.A. Santos, M.L. Baesso, L.A.O. Nunes, L.H.C. Andrade,