Glass formation and properties of GeSe2–Ga2Se3–MX (MX is alkali halide) chalcohalide glasses

The glass forming, optical, thermal, and mechanical properties of GeSe2–Ga2Se3–MX (MX is alkali halide) chalcohalide glasses are reported. A unique property of the glasses is that they have excellent transparency in red-light region in addition to the 8–14 μm atmospheric window. This property is interesting and important for improving the quality control of infrared systems. These glasses also present good thermal stability. They could be promising materials for infrared transmitting applications, although their thermo-mechanical properties are relatively weak.