Patent ID: 8389097
Filing Date: 2013-03-05
Classification: G11B,Y10T

Abstract:
1. Optical storage medium comprising: a substrate layer, a read-only data layer with a pit structure disposed on the substrate layer, a cover layer, and a nonlinear layer with a super-resolution structure disposed between the data layer and the cover layer, which super-resolution structure comprises a semiconductor material and grainy impurities of a dielectric material, wherein the semiconductor material has an increased reflectivity, when irradiated with a laser beam, the nonlinear layer comprises: a first nonlinear layer with a super-resolution structure disposed above the data layer, a second nonlinear layer with a super-resolution structure disposed above the first nonlinear layer, and the dielectric material is arranged as a dielectric layer of inhomogeneous thickness with a thickness below 5 nm between the first and the second nonlinear layers.