Abstract
In this paper, luminescence and lasing properties of Dy3+-doped-borate glasses for white light generation are studied. Experimental and theoretical oscillator strengths from absorption spectrum are calculated by Judd-Oflet (JO) theory. Symmetric and environment covalency around the Dy3+ ions are confirmed from JO intensity parameters (Ωλ, λ = 2, 4, 6). Photoluminescence emission spectra are recorded under the excitation wavelength of 350 nm. Concentration quenching is observed at 0.7 mol% of Dy3+ ion contents. Lasing properties [radiative probability (AR), branching ratio (βrad), effective band width (△λeff) and stimulated emission {σ(λp)}] of lithium fluoroborate (LFB)Dy glasses are calculated. From experimental and theoretical decay time, quantum efficiency (η) and non-radiative relaxation (WNR) are calculated. From the chromoticity, CCT values and greater stimulated emission (5.29 × 10−20 cm2), it is inferred that LFB-Dy-07 glass sample can be exploited for the manufacturing of white light emitting diodes (W-LEDs) as well as a laser source.
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