Tb3+(4f8) and Mn2+ (3d5) ions, known as active luminescent centres for blue, green and red fluorescence, were doped in various fluoride, phosphate and silicate glasses with tell known structure. Narrow bands of f-f transitions with strong emissions of Tb3+ in the blue, green and red and broad bands of 3-3 transitions of Mn2+ were measured with green emission in high optical basiscity glasses with tetrahedrally coordinated Mn2+. Orange to red Mn2+ emission was found in glasses with low optical basicity where Mn2+ is octahedrally coordinated. Lifetimes in the ranges of milliseconds were recorded in dependence of glass composition and dopant concentrations for both Tb3+ and Mn2+ doped glasses. Fluorescence lifetimes are as well shortened by higher basicity of the glasses as by increasing dopant concentration.
