Commissariat a L'energie Atomique

Mpo International

Other

Robin Perrier

Bernard Bechevet

Marie-Francoise Armand

Ludovic Poupinet

Jean-Michel Bruneau

Romain Anciant

Olivier Fallou

Romuald Paviet

A process for manufacturing a recordable optical disk including forming a back rewritable layer and depositing a transparent intercalary layer on the back rewritable layer, and forming a front rewritable layer including a metallic alloy and a cermet dielectric such that the front rewritable layer has a transmission rate greater than or equal to about 45%, and a recordable optical disk including a substrate and an active layer including a cermet, wherein the active layer covers at least one back rewritable layer and the active cermet layer has a transmission rate greater than or equal to about 45%.

Process for manufacturing a recordable optical disk, optical disk and rewritable layer obtained by the process

The medium comprises a bilayer stack constituted of an inorganic layer () and a semi-reflecting layer (). The inorganic layer () can be deformed under the effect of light radiation () passed through the semi-reflecting layer, which lowers the reflection coefficient of the stack. Application to irreversible recording of information data, for example on discs.

Irreversible optical recording medium

Laser beam optical recording medium featuring several read/write levels

Growing community of inventors

Grenoble, France

Robin Perrier