Correlation between Radiative Transition Probabilities of Nd³⁺ and Composition in Silicate, Borate, and Phosphate Glasses

Abstract

Compositional dependence of spontaneous emission probabilities between initial 4F,, and terminal ' Z, (J = 9/2, 1112, 13/2,15/2) levels of Nd3+ were studied for about 90 samples of silicate, borate, and phosphate glasses using the Judd-Ofelt theory. The effect of the covalency of the Nd-0 bond on the magnitude of intensity parameters was estimated from the variation of spectral profiles of the ' Z9/, 4 4G, , 'G,,, and 4F,12, 4S,,2 transitions. Intensity parameters R4 and R, and the spontaneous emission probabilities were strongly affected by the ionic packing ratio of the glass host. The results were discussed in terms of the site selectivity of Nd3+ ions in glasses.

Influence of crystal field potential on the spectroscopic parameters of SiO2·B2O3·PbO glass doped with Nd2O3

“…Furthermore, increases in O 4 with increase in concentrations of Nd 2 O 3 indicate possible far-reaching effects on the host matrix in the area surrounding Nd À O such as increased glass packing density [11,12]. Increased O 4 , in turn, suggests that more Nd 3 + ions are dissolved in the glass matrix.…”

“…Increased O 4 , in turn, suggests that more Nd 3 + ions are dissolved in the glass matrix. This is credited to the association of O 4 with repulsive long range interactions between the cations [11][12][13].…”

“…These results were reinforced by Judd-Ofelt calculations. The Judd-Ofelt (JO) theory [8,9] has been widely used to study the environment surrounding RE ions in glass [10][11][12][13][14][15]. The theory gives the Judd-Ofelt parameters O 2 , O 4 and O 6 , from which radiative properties can be obtained.…”

Optical spectroscopy of Nd3+ ions in a nanostructured glass matrix

“…[6]. parameter is related to the long range covalency effects of the network [34][35][36]. This parameter increased as a function of treatment time, indicating the increase of long range effects [34,35].…”

Effect of Nd3 + concentration on the physical and absorption properties of sodium-lead-borate glasses

“…Physical and spectroscopic properties of silicate, borate and phosphate glasses doped with various rare earth (RE 3+ ) ions have been extensively investigated in the past, and many technological and commercial applications have been realized [1][2][3][4]. Neodymium has been most widely studied as doping agent and has come out to be most applicable for laser action, since neodymium lasers can operate with high efficiency, even at room temperature.…”