Abstract
Single crystals of KGd(WO 4) 2 doped with Nd 3+ and Er 3+ ions were grown by the top seeded solution growth method. Detailed analysis of the room-temperature absorption spectra was performed using the conventional Judd–Ofelt theory and actual dependence of the refractive index on the wavelength. In addition to the intensity parameters Ω 2, Ω 4, Ω 6, the branching ratios and radiative lifetimes were estimated for all possible transitions in the studied spectral region. Those transitions which can be potentially used for laser applications have been identified for both ions.
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