SPECTROSCOPY OF INF3 BASED GLASSES CONTAINING A LARGE AMOUNT OF GDF3

Glass formation in the pseudo ternary system ZnF2-GdF3-BaF2-InF3 and o ther complex systems stabilized by NaF, CaF2, AlF3 and YF3 have been i nvestigated. Samples with greater stability have been prepared and the ir properties measured. Optical absorption and emission spectra of Gd3 + ions doped glasses with 2, 4, 10 and 20% concentrations have been me asured. Using the Judd-Ofelt theory and the experimental oscillator st rengths, the Judd-Ofelt parameters have been calculated. The emission of Gd3+ ions from I-6 and P-6 has been detected and the lifetime has b een measured.