Structural characterization of a new fluorophosphotellurite glass system.

While phosphotellurite glasses have superior properties over SiO-based glasses for many applications in optoelectronics and photonic devices, their high hydroxyl content limits their use in the mid-infrared range. This drawback can be overcome by fluoride addition to the formulation. In this work, we report the preparation, optical, and structural characterization of new glasses in the ternary system TeO-NaF-NaPO having the compositions 0.