STRUCTURE FOR OPTICAL STORAGE OF INFORMATION AND METHOD OF OPTIMIZING PRODUCTION OF THIS STRUCTURE

摘要

The invention relates to a high-resolution optical storage structure possessing an information storage capacity (Cst) and comprising: a substrate (10) comprising physical marks (Ms) whose geometric configuration defines the item of information recorded, the smallest physical marks (2T) exhibiting a length on substrate (Ls) and a width on substrate (ls); a superposition of at least one first layer (111) and of a second layer termed active (112) on the surface of the said substrate comprising the physical marks, so as to create information marks (Mopt) ensuring the information storage capacity at the level of the second active layer, of optimal length (Lopt) and of so-called optimal width (lopt) characterized in that: the length on substrate of the marks complies with the following condition: Ls = a Lopt + b the width on substrate of the marks complies with the following condition: ls = c lopt + d with a and c being between about 0.5 and 1 b and d being between about 30 and 80 nanometres and Lopt and lopt being between 0 and about 160 nanometres. The subject of the invention is also a method of optimizing production of the optical storage structure.