New TeO2 based glasses for nonlinear optical applications : study of the Tl2O-TeO2-Bi2O3, Tl2O-TeO2-PbO and Tl2O-TeO2-Ga2O3 systems

Abstract

Large glass forming domains have been identified at 800°C in the Tl2O-TeO2-Bi2O3, Tl2O-TeO2-PbO and Tl2O-TeO2-Ga2O3 systems and are presented for the first time. Densities, glass transition (Tg) and crystallisation (Tc) temperatures have been determined. Nonlinear refractive indices of some glasses have been measured at 0.8 and 1.5 µm...