Abstract

Broad band absorbers are key components to suppress parasitic light, especially for spatial applications. This optical function is usually fulfilled by rough black surfaces or paints, that can be dielectric coated for better performances [1]. However in this case the non absorbed light is fully scattered, what cannot be accepted for some applications [2]. Therefore smooth metal-dielectric coatings may provide efficient alternative solutions to these problems.

© 1998 Optical Society of America