Abstract

The advantage of the time-resolved spectroscopy technique for reducing the spectral interference between the ⁵D₀ and ⁵D₁ emission lines of Eu³⁺ ions in EuP₅O₁₄ crystals is explained in detail. It is shown that this technique may be very helpful for rare earth ions fluorescence studies in general whenever a group of two or more neighboring levels emit photons to the same lower levels but their lifetimes are different. The wavelengths of many new lines of the ⁵D₀ → ⁷F_j (j = 3-6) emission bands of Eu³⁺ in EuP₅O₁₄ are measured by this technique.

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