Intraion Spectral Interference Elimination in Eup₅O₁₄ by Time Resolved Spectroscopy and New Excitation Transfer Experiments in Tb_0.66Eu_0.33P₅O₁₄ Crystals

Abstract

The advantage of time resolved spectroscopy technique for reducing the spectral interference between the ⁵D₀ and ⁵D₁ emission lines of Eu³⁺ ions in EuP₅O₁₄ crystals is explained. It is shown that this technique may be very helpful for fluorescence studies of rare earth ions in general whenever two or more neighbouring levels which have different lifetimes emit to neighbouring lower levels. The wavelengths of many new lines of the ⁵D₀→⁷F_j (j = 3-6) emission bands of Eu³⁺ in EuP₅O₁₄ that could not be measured by CW experiments have been measured by this technique.