Abstract
Dy3+:Li2Gd4(MoO4)7 crystal with dimensions of ∅20×25mm3 has been grown by the Czochralski method. The spectroscopic properties of Dy3+:Li2Gd4(MoO4)7 crystal have been investigated. Based on the analysis of polarized absorption spectra in the framework of the Judd–Ofelt theory, the main spectroscopic characteristics, including the phenomenological intensity parameters, spontaneous transition probabilities, fluorescence branching ratios and radiative lifetimes of Dy3+ in the crystal, have been determined. The emission cross-sections for the 4F9/2→6H13/2 transition of special interest for laser application have been calculated using the Füchtbauer–Ladenburg (F–L) equation. The fluorescence and radiative lifetimes of 4F9/2 manifold are equal to 126.5μs and 201.1μs, respectively, which mean the quantum efficiency is 62.9%. The results propose the possibility of Dy3+:Li2Gd4(MoO4)7 crystal for solid-state yellow laser pumped by commercially available blue laser diodes.
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