INDIUM AND GALLIUM FLUOROCHLORIDE GLASSES

Systematic attempts of chlorine incorporation were implemented in fluo rogallate and fluoroindate glasses. High chloride content was achieved in the InF3-BaF2-PbCl2-NaCl system. Up to 15 mol% NaCl or 7.5 mol% Pb Cl2 could be incorporated in glasses based on GaF3 or GaF3-InF3. The e ffect of chlorine content on glass formation and properties has been i nvestigated. IR cut-off is shifted toward longer wavelength and (1)G(4 ) fluorescence lifetime of Pr3+ doping ions is increased. Such composi tions have been used for the core of experimental optical fibers. (C) 1997 Elsevier Science B.V.