Abstract
In this paper, for the first time, the visible fluorescence properties, resonance energy transfer mechanism responsible for non-radiative decay rates of 5D4 → 7F5 transition and also quenching of fluorescence intensity of the 5D3 → 7F5 transition of various concentrations of Tb3+ ions in LBZLFB glasses are reported. Optical absorption, fluorescence spectra and quantum efficiencies are measured and analysed. Green fluorescence related to 5D4 → 7F5 (548 nm) transition is registered under excitation of 378 nm of Tb3+ ions. Based on excitation and fluorescence measurements, several spectroscopic parameters for Tb3+ ions are examined as a function of concentration by Judd–Ofelt theory to judge the suitability of studied glasses for display devices and fibre lasers.
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Acknowledgements
BDPR is thankful to the Department of Atomic Energy-Board of Research in Nuclear Sciences (DAE-BRNS), Government of India, INDIA, for providing financial assistance to carry out this work; vide reference number: 34/14/06/2014; dated: 21-04-2014. We also acknowledge the Sophisticated Analytical Instrument Facility (SAIF), Indian Institute of Technology, Chennai, for extending instrumental facilities.
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GRD and CMR contributed equally to this work.
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DILLIP, G.R., REDDY, C.M., RAJESH, M. et al. Green fluorescence of terbium ions in lithium fluoroborate glasses for fibre lasers and display devices. Bull Mater Sci 39, 711–717 (2016). https://doi.org/10.1007/s12034-016-1192-0
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DOI: https://doi.org/10.1007/s12034-016-1192-0