期刊
OPTICAL MATERIALS
卷 36, 期 2, 页码 242-250出版社
ELSEVIER
DOI: 10.1016/j.optmat.2013.09.002
关键词
Phosphate glass; Samarium; Judd-Ofelt analysis; Fluorescence properties; Decay analysis; Radiative lifetime
资金
- Kerala State Council for the Science, Technology and Environment [(T)424/SRS/2009/CSTE]
- UGC (Govt. of India)
- DST (Govt. of India)
- UGC
In the present work, different concentrations of Sm3+ ions doped zinc potassium fluorophosphate glasses (PKAMZFSm: P2O5 + K2O + MgO + Al2O3 + ZnF2 + Sm2O3) were synthesized via melt quench technique. Physical properties and refractive indices of the present glasses were evaluated. Optical characterization of Sm3+: PKAMZF glasses through absorption, excitation, emission and decay spectra had been carried out. Nephelauxetic ratios, bonding parameter and energy band gap of the 1.0 mol% Sm3+-doped PKAMZF glass were evaluated using absorption spectra. Judd-Ofelt (JO) intensity analysis had been presented and JO parameters were evaluated for 1.0 mol% Sm3+-doped zinc potassium fluorophosphate glass. Radiative properties such as transition probabilities, branching ratios and radiative lifetime were estimated by using JO parameters. Stimulated emission cross-sections and effective bandwidths of each transition were obtained from the luminescence spectra. The experimental lifetime, quantum efficiency and donor-acceptor interaction parameters were also estimated using decay curves of (4)G(5/2) level of Sm3+ ions in the present glasses. The influence of Sm3+ ion concentrations on the luminescence intensity, lifetime and energy transfer parameters for PKAMZFSm glasses was investigated. The results obtained have been compared with the other Sm3+-doped glasses. (C) 2013 Elsevier B.V. All rights reserved.
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