کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5403349 1392758 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tm3+-Ho3+ and Tm3+-Tb3+ energy transfer in tellurite glass
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Tm3+-Ho3+ and Tm3+-Tb3+ energy transfer in tellurite glass
چکیده انگلیسی
In Tm3+-Ho3+- and Tm3+-Tb3+-doped tellurite glasses, the IR fluorescence spectra and the lifetimes of the upper 3H4 and lower 3F4 lasing levels for 1.47 μm of Tm3+ were measured. The non-exponential decay is fitted using the Inokuti-Hirayama equation. The energy-transfer parameter CDA, critical ion distance R0, lifetime and non-radiative energy-transfer efficiency η between donor and acceptor ions are compared. The quenching mechanism has been explained. Both Ho3+ and Tb3+ ions reduce the lifetimes of the upper and lower lasing levels, with Tb3+ ions proving more efficient than the effects observed for Ho3+ ions. The optimised Tb2O3 concentration is about 1.0-1.5 wt%, which produced effective inversion and could be used for laser and amplifier applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 126, Issue 2, October 2007, Pages 434-440
نویسندگان
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