Patent ID: 7742210
Filing Date: 2010-06-22
Classification: G03H,G11B,G11C

Abstract:
1. An apparatus for replicating holographically recorded data, comprising: a holographic master media having holographically recorded data thereon; a light source, having a tunable wavelength, for generating a master reference beam, incident on the holographic master media, thereby generating a first object beam; and a first copy-reference-beam-generating system including: a holographic copy media; a first optical relay system, disposed between the holographic master media and the holographic copy media, for relaying the first object beam from the holographic master media to the holographic copy media; a reflective surface; and a second optical relay system disposed between the holographic copy media and the reflective surface so that the optical axis of the second optical relay system is coincident with the optical axis of the first optical relay system, the second optical relay system relaying a portion of the first object beam transmitted by the holographic copy media to the reflective surface, the reflective surface reflecting the transmitted portion of the object beam at the holographic copy media, thereby generating a copy reference beam, the holographic copy media recording an interference pattern between the first object beam and the copy reference beam, thereby replicating at least a portion of holographically recorded data.