Theoretical analysis reveals distinct polarizability relationships for neodymium laser transitions in dielectric crystals, highlighting divergent optical behaviors among lanthanide dopants.
The dependence between stimulated-emission cross-sections and polarizability volumes has been studied for laser transitions of Nd 3+ , Ho 3+ , Er 3+ , and Tm 3+ ions doped in dielectric crystals: complex oxides, simple and complex fluorides. The overall polarizability of each crystal containing Ln 3+ ions has been calculated by inclusion of the dopant polarizability in respective concentration. The applied method has revealed distinctly different positions of Nd 3+ ions in the mentioned dependence in a series of crystals, e.g. Y 3 Al 5 O 12 , YAlO 3 , LiYF 4 , compared to the other Ln 3+ ions doped in the same lattices.
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Petrov et al. (2024) studied this question.
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