EMF, a Dynasil Company, Announces Optics Coating Capabilities for Chalcogenide Family of Substrates for Infrared Applications
“We recognized the industry shift towards the chalcogenides early and custom-designed our Diamond-like Carbon (DLC) chamber to successfully coat chalcogenides, along with other IR substrates including germanium (Ge), silicon (Si), zinc selenide (ZnSe), and zinc sulfide (ZnS) at scale,” said
Coating chalcogenides can be particularly temperamental - too few layers can result in the optic failing to meet required durability standards, while too many layers can lead to undue stress and the coating’s premature rupture. Additionally, chalcogenides are prone to scratching and have a tendency towards tiny defects called pinholes that prevent a uniform coating.
Schulz added, “In designing our DLC chamber, our team of experts kept coating chalcogenides at the forefront, so everything from our chamber’s geometry to its operating temperature, gas inputs, and even the coating direction has been carefully designed and calibrated to ensure that our processes produce dependable, long-lasting coatings on chalcogenides that have virtually zero pinholes.”
EMF’s DLC chamber and state-of-the-art-technology provides the capability to successfully coat and deliver infrared optics for the most demanding commercial and military applications.
Dynasil will be promoting its IR-coating capabilities along with other photonics-related products and services at booth 242 during the 2020 SPIE Photonics West exhibition from
Source: Dynasil Corporation of America