APPARATUS FOR REPRODUCTING HOLOGRAPHIC ROM DISK BY USING A MASTER DISK

摘要

The present invention relates to a holographic ROM disk replication apparatus using a master disc, a light source that generates a planar wave form of the first signal light having a first wavelength, the in response to both the second signal and the first signal light having a second wavelength and the dopant is introduced into the photosensitive material of the recording material layer is provided on the path of the first signal recording disc and a photosensitive material of the recording material layer a dopant that does not react with a reaction on the second signal, the first signal for which transmits the first optical signal to be injected, and in which the first interferogram by the second signal recording state including a master disk is arranged behind the disc for recording on the path of the first signal light; The first signal light is incident on the disc reproducing light for recording which diffraction is produced by the diffraction pattern of the master disk, it characterized in that the interferogram replication in the recording material layer of the recording disk for by the first signal light and the reproduction light, production and yield improvement in the replication of the master disk and even by varying the manufacture of a dopant of the recording disk for not perform post-exposure or fixing process by preventing the replication, the characteristics of the master disk of the ROM disk is not changed, the holographic ROM disk there are advantages.