<title>New protective antireflecting coating for multispectral ZnS</title>

Design and fabrication of multi-layers infrared antireflection coating consisting of ZnS and Ge on ZnS substrate

“…In order to enhance the transmittance of infrared windows, it is essential to use multi-layers antireflection coating. Several multi-layers coatings, consisting of low and high index materials, have been applied by researchers to enhance the transmission of ZnS in the range of 8-12 lm: ThF 4 /ZnS [2], YF 3 /ZnS (only designed, not measured) [3], YF 3 /ZrN [4], YbF 3 /ZnS [5], DLC/BP [6], double-layer Ge 1Àx C x [7,8] and multilayer hard carbon [9].…”