High-resistant multispectral optical coatings for infrared applications

Controlling the infrared optical properties of rf-sputtered NiO films for applications of infrared window

“…(1) well with Ge substrate (n = 4.0) [5]. The results of the Ge window with single layer of DLC coatings were reported [6,7] but the multi-layer of DLC coatings were generally adopted to more increase the transmittance or to enlarge the transmission bands [8,9]. By using multi-layer DLC coating, the transmittance of the Ge window can be increased to a value near 1 in the long-wavelength infrared (LWIR) region [9].…”