کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7899584 | 1510349 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of luminescence parameters of novel glasses with composition TeO2-ZnO-NaF-MoO2-Er2O3 as laser material
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
Fluoroquaternary glasses within system 70TeO2-10ZnO-10NaF-(10â¯ââ¯x)MoO2-xEr2O3 doped with different concentration of xEr2O3 ions were prepared by using melt- quenching technique. The amorphous nature of the glasses confirmed by using X-ray diffraction. Physical parameters viz.: density (Ï), molar volumes (Vm), refractive index (n), an optical energy gap (Eg) and Urbach energy (ÎE) values of prepared glasses were evaluated. Moreover, the Judd-Ofelt parameters Ω2, Ω4, Ω6, the oscillator strength type transition probabilities, Smeas, Scal, spectroscopic quality factors, X, branching ratio, βR and radiative lifetimes, ÏR, of several excited states of Er3+ have been computed. The gain cross-section of laser transition level from 4I13/2â¯ââ¯4I15/2 and stimulated emission cross-section estimated with different concentration of Er2O3 ions in all present glasses. Here the spectroscopic properties indicate that these glasses doped with Er3+ are a promising candidate for optical applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 498, 15 October 2018, Pages 72-81
Journal: Journal of Non-Crystalline Solids - Volume 498, 15 October 2018, Pages 72-81
نویسندگان
Y.M. AbouDeif, El Sayed Yousef, Samir Y. Marzouk,