Origin of excess scattering in fluoride glasses

Abstract

The origin of excess light scattering in fluoride glasses has been investigated by measuring transient changes in the scattering intensity of the glass melts upon cooling. It has been found that the scattering centers were already present in the glass melts and the excess scattering intensity decreased by degrees as the melts were cooled to glass transition temperature. The results suggest that oxide impurities cause the excess scattering in the fluoride glasses.