Optical Storage and Recording Using Surface Polaritons on Grating Structure
Original Publication Date: 1981-Mar-01
Included in the Prior Art Database: 2005-Feb-11
An optical storage and recording system using surface polaritons has a prism free structure in which the surface of the surface active medium is molded in the shape of a periodic grating. As shown in the drawing, the system 10 includes a periodic grating 12 of a surface active material, such as Cu, Ag, Au or Al, that is coated with the optical storage or recording medium 14. Medium 16 is the substrate or a second optical storage or recording medium that can be accessed from below. Alternatively a composite structure addressable from both sides consists of two systems 10 joined back to back via substrates 16.