کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7906170 | 1510751 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optical and luminescence characteristics of Sm3+ doped B2O3-GeO2-Gd2O3 glasses
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Glasses with the composition of 30B2O340GeO2-(30-x)Gd2O3-xSm2O3 (xâ¯=â¯0.25, 0.5, 1 and 1.5â¯mol%) have been prepared by melt quenching technique. Their optical and luminescence properties were analyzed via absorption, photoluminescence and decay time measurements. Judd-Ofelt intensity parameters (Ωλ, λâ¯=â¯2,4,6) obtained from the absorption spectrum follow the trend Ω4â¯>â¯Î©2â¯>â¯Î©6. Photoluminescence spectra revealed a dominant emission band at 597â¯nm which was attributed to 4G5/2â¯ââ¯6H7/2 transition. From the emission spectra and Judd-Ofelt intensity parameters radiative properties including transition probabilities (A), radiative decay times (ÏR), branching ratio (βR) and stimulated emission cross-section (ÏpE) were calculated. The decay curves of 4G5/2 level exhibited non-exponential behavior and well fitted to Inokuti-Hirayama model for Sâ¯=â¯6. The analyzed spectroscopic properties viz. A, βR, ÏpE and CIE chromaticity coordinates demonstrate the suitability of BGGS1.00 glass for visible reddish-orange laser applications among the prepared glasses.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 83, September 2018, Pages 233-240
Journal: Optical Materials - Volume 83, September 2018, Pages 233-240
نویسندگان
Melis Gökçe, Deniz KoçyiÄit,