Writing and reading of holographic storage media involves at least partly superimposing deflected first and second beams in defined spatial region of storage medium at definable angle

摘要

The method involves deflecting a first beam (6) of electromagnetic radiation from a fixed course on the side of a first deflection unit (8) remote from the storage medium (2) to the side nearer the medium in a variable course, similarly deflecting a second beam (10) with a second deflection unit (12) and at least partly superimposing the first and second beams in a defined spatial region of the storage medium at a definable angle. AN Independent claim is also included for the following: (a) a device for processing information in different spatial areas of a holographic storage medium.