Abstract
Energy transfer characteristics from Yb3+ to Tm3+ ions have been investigated on five different oxide lattices as well as four fluoride lattices for the purpose of characterizing the host materials and of obtaining optimizing procedures for laser and display devices. It has been shown that the energy transfer coefficients of the oxide crystals are distinctly larger and more strongly dependent upon the donor concentration than those of the fluoride lattices. Microscopic interaction parameters have been determined for the oxide as well as the fluoride lattices by comparing the experimental results with the results of computer simulation, assuming dipole–dipole (d–d) interaction between relevant ions. It has also been shown that d–d interaction parameters in the oxide host materials have significantly different values for different materials.
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