Irreversible optical recording medium

摘要

The medium comprises a bilayer stack constituted of an inorganic layer ( 30 ) and a semi-reflecting layer ( 32 ). The inorganic layer ( 30 ) can be deformed under the effect of light radiation ( 34 ) 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.