The II-VI Infrared Division of II-VI Incorporated announced the expansion of its durable coatings with a new thin film Diamond OverCoat (DOC). Applications such as 3D printing and via hole drilling expose CO2 laser optics to harsh environments. II-VI’s new Diamond OverCoat is a hybrid anti-reflection coating that minimizes tradeoffs between optical performance and durability compared to standard anti-reflection (AR) designs or existing diamond-like carbon (DLC) coatings. The new versatile DOC coating can be applied to various geometries, wavelengths and materials including ZnSe, copper, silicon, SiC and diamond. II-VI Incorporated innovations and capabilities being showcased at Photonics West 2017 will highlight the advances its material science and technology platforms have made possible for customers in materials processing, industrial machine tools, biomedical instrumentation and the military. II-VI will launch several new high power semiconductor laser chips, modules and bars as well as high power laser optics for next generation CO2, fiber and direct diode lasers.