کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5402780 | 1392741 | 2010 | 6 صفحه PDF | دانلود رایگان |

Thermal, structural and optical properties of Dy3+-doped alkali fluoroborate glasses with composition (in mol%), 49B2O3+25XO+25NaF+1Dy2O3 (where X=Li2, Na2, K2, Mg and Ca), have been investigated. Thermal analysis revealed the homogeneous formation of the glasses. The FTIR spectra reveal that the glasses contain BO3, BO4 non-bridging oxygen atoms and strong OHâ bonds. From the optical absorption spectra, Judd-Ofelt intensity parameters (Ωλ, λ=2, 4 and 6) have been evaluated and are in turn used to predict radiative properties such as radiative transition probability (A), stimulated emission cross-section (ÏPE) and branching ratios (βR) for the excited levels of Dy3+ ions in alkali fluoroborate glasses. The dependence of the spectral characteristics of Dy3+ ions due to compositional changes has been examined and reported.
Journal: Journal of Luminescence - Volume 130, Issue 6, June 2010, Pages 1067-1072