Glass forming and properties of Ga2S3[sbnd]Sb2S3[sbnd]CsCl chalcohalide system.

In this work, a new chalcohalide glass system, Ga 2 S 3 Sb 2 S 3 CsCl (GSSC), is reported. The glass-forming ability and the physical properties are investigated; and the potential applications of these glasses are evaluated. The glass forming ability can be remarkably improved when CsCl is added into Ga 2 S 3 Sb 2 S 3 glasses, and the compositions with more than 30% CsCl possess quite good thermal stability against crystallization. The studied GSSC glasses have transition temperatures of 217–250 °C, densities of 3.42–3.97 g/cm 3 , micro-hardness of 1.12–1.88 GPa, a transparent window of ∼0.56–13.4 μm, linear refractive indices of 1.99–2.58 @ 10 μm, nonlinear refractive indices of 1.1–11.9 × 10 −14 cm 2 /W @ 1030 nm, and zero group-velocity-dispersion wavelengths of 3.37–5.15 μm. The wide transparent window and the superior optical nonlinear property make these glasses good optical materials for infrared imaging and nonlinear photonics. [ABSTRACT FROM AUTHOR]