کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5402392 | 1392733 | 2010 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spectroscopic investigations and luminescence spectra of Nd3+ and Dy3+ doped different phosphate glasses
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Spectral properties of Nd3+ and Dy3+ ions in different phosphate glasses were studied and several spectroscopic parameters were reported. Covalency of rare-earth-oxygen bond was studied in these phosphate glass matrices with the variation of modifier in host glass matrix. Using Judd-Ofelt intensity parameters (Ω2, Ω4 and Ω6), radiative transition probabilities (A) and radiative lifetimes (ÏR) of certain excited states of Nd3+ and Dy3+ ions are estimated in these glass matrices. From the magnitudes of branching ratios (βR) and integrated absorption cross-sections (Σ), certain transitions of both the ions are identified for laser excitation. From the emission spectra, peak stimulated emission cross-sections (ÏP) are evaluated for the emission transitions observed in all these phosphate glass matrices for both Nd3+ and Dy3+ ions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 130, Issue 4, April 2010, Pages 536-543
Journal: Journal of Luminescence - Volume 130, Issue 4, April 2010, Pages 536-543
نویسندگان
M. Seshadri, K. Venkata Rao, J. Lakshmana Rao, K.S.R. Koteswara Rao, Y.C. Ratnakaram,