Optical absorption and photoluminescence studies of Dy3+: LCZSFB glasses

Abstract

Lead containing calcium zinc sodium fluoroborate [LCZSFB] glasses doped with different Dy3+ ion concentrations have been prepared and characterized through optical absorption and photoluminescence studies. The three phenomenological intensity parameters Ωλ (λ=2,4 and 6) have been determined from the absorption spectral intensities using the Judd-Ofelt (J-O) theory. The hypersensitivity of 6H15/2 → 6F11/2 transition based on the magnitude of Ω2 parameter has also been discussed. By using the J-O intensity parameters several radiative properties such as spontaneous transition probabilities (AR), radiative branching ratios (βR) and radiative lifetimes (τR) have been determined. The effect of Dy3+ ion concentration on emission intensities has also been reported and stimulated emission cross section (σe) of emission transitions is also reported. © 2011 Photonics Society of Poland.