Spectroscopy of praseodymium(III) in zirconium fluoride glass

Optical absorption, fluorescence and decay properties of Pr3+-doped PbO–H3BO3–TiO2–AlF3 glasses

“…For glasses doped with different concentrations of Pr 3+ ion, the gain properties of 3 P 0 -3 H 4 level are higher than 1 D 2 -3 H 4 level. The magnitude of (s e  t m ) obtained for 1 D 2 -3 H 4 level for 0.1 mol% Pr 3+ -doped glass is exactly one third to the value obtained for ZBLA glass, whereas for 3 P 0 -3 H 4 level in 0.5 mol% Pr 3+ glass, the value is nearly equal to the ZBLA glass [41]. Based on the measured radiative parameters it is suggested that PbO-H 3 BO 3 -TiO 2 -AlF 3 glasses activated with 0.5 mol% Pr 3+ ions can be used for blue laser emission at 461 nm corresponding to 3 P 0 -3 H 4 transition.…”

Structural, absorption and fluorescence spectral analysis of Pr3+ ions doped zinc bismuth borate glasses

“…Because of this small energy separation, a negative value for the parameter˝2 has been reported [27] and there is usually a poor agreement between the theoretically estimated and experimentally measured results for various optical parameters [27]. Many authors [28][29][30] have therefore excluded the 3 H 4 → 3 P 2 transition in applying the Judd-Ofelt theory to the observed spectrum of Pr 3+ ions. The Judd-Ofelt parameters have been recalculated after excluding this transition but it was noted that neither the calculated oscillator strength nor the ı RMS deviation showed any significant improvement.…”

Spectroscopic properties of Pr3 + -doped erbium oxalate crystals

“…This can be explained as due to the hyperfine nature of the transition. The larger difference between the calculated and observed oscillator strengths arises because of the strong 4f-5d mixing [12] which is known to bring about contribution to intensities through the odd matrix elements which are usually neglected in the J-O model.…”