Development of diamond like carbon film coated window with wide spectral transmission

The development of diamond like carbon(DLC) film coated optical windows with wide spectral transmission is presented in this paper. This DLC coated window can be used as an optical window in the spectral range of 0.53~12.00 μm with the transmission of higher than 70% in most of the spectral band. The uniformity of the film is better than 97% with the area of 60 mm. The optical performance and environment adaptability of the DLC coated window are also tested. It can not only work well in damp, hot or cold environment but also tolerate infrared high power lasers. The windows have been tested by “general specification for optical coatings” (GJB2485—95) and “specification for the coated window with wide spectral transmission”(Q/AF20087—2003).