Intensity parameters and laser analysis of Pr³⁺ and Dy³⁺ in oxide glasses

Intensity parameters (Ω_Λ) of Pr³⁺ and Dy³⁺ have been obtained in tellurite, borate and phosphate glasses. It has been found that Ω_Λ calculated by exlusion of hypersensitive transitions, gives a better fit between measured and calculated lifetimes and branching ratios than those including hypersensitive transitions. Using these parameters and calculated matrix elements U^(Λ), radiative transition probabilities, branching ratios and integrated cross sections for stimulated emission were calculated for ³P₀, ³P₁ and ¹D₂ excited states of Pr³⁺ and ⁴F 9 2 excited state of Dy³⁺. Potential transitions are indicated.