Green fluorescence of terbium ions in lithium fluoroborate glasses for fibre lasers and display devices

In this paper, for the first time, the visible fluorescence properties, resonance energy transfer mechanism responsible for non-radiative decay rates of 5 D 4 → 7 F 5 transition and also quenching of fluorescence intensity of the 5 D 3 → 7 F 5 transition of various concentrations of Tb 3+ ions in LB...

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Bibliographic Details
Published in:Bulletin of materials science 2016-06, Vol.39 (3), p.711-717
Main Authors: DILLIP, G R, REDDY, C MADHUKAR, RAJESH, M, CHAURASIA, SHIVANAND, RAJU, B DEVA PRASAD, JOO, S W
Format: Article
Language:English
Subjects:
Asymmetry
Chemistry and Materials Science
Communication
Decay rate
Display devices
Energy transfer
Engineering
Excitation
Fiber lasers
Fluorescence
Fluorides
Lasers
Ligands
Lithium
Materials Science
Physical properties
Quantum efficiency
Symmetry
Trends
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Summary:In this paper, for the first time, the visible fluorescence properties, resonance energy transfer mechanism responsible for non-radiative decay rates of 5 D 4 → 7 F 5 transition and also quenching of fluorescence intensity of the 5 D 3 → 7 F 5 transition of various concentrations of Tb 3+ ions in LBZLFB glasses are reported. Optical absorption, fluorescence spectra and quantum efficiencies are measured and analysed. Green fluorescence related to 5 D 4 → 7 F 5 (548 nm) transition is registered under excitation of 378 nm of Tb 3+ ions. Based on excitation and fluorescence measurements, several spectroscopic parameters for Tb 3+ 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.
ISSN:0250-4707
0973-7669
DOI:10.1007/s12034-016-1192-0