کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5399409 | 1505905 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and spectral analysis of Sm:BaB4O7 microfibers embedded in borate glass
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis and spectral analysis of Sm:BaB4O7 microfibers embedded in borate glass Synthesis and spectral analysis of Sm:BaB4O7 microfibers embedded in borate glass](/preview/png/5399409.png)
چکیده انگلیسی
The present article reports synthesis and spectroscopic analysis of Sm:BaB4O7 microfibers embedded in borate glass. Structural analysis, using TEM, XRD techniques, revealed the formation of fibre shaped BaB4O7 crystals. A bright red dominated orange-red emission was observed, on 355Â nm and 532Â nm excitations, in ceramic sample. Higher emission and absorption higher cross-sections were observed in the ceramic sample than its glass counterpart. We have monitored 45% enhancement in emission intensity ratio (4G5/2â6H9/2/G5/2â6H5/2) in glass-ceramic sample due to significant increment in electric dipole transition. Time resolved analysis explored a significant alteration in the excited state relaxation process due to annealing. Several radiative parameters like stimulated emission cross-section, branching ratio, quantum efficiency etc. were estimated to explore lasing possibility in glass and ceramic samples. We found that the quantum efficiency increases from 60.4% in glass to 62.7% in Sm:BaB4O7 microfibers embedded in glass.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 155, November 2014, Pages 52-57
Journal: Journal of Luminescence - Volume 155, November 2014, Pages 52-57
نویسندگان
Y. Dwivedi, S.C. Zilio, S.B. Rai,