Read-only holographic versatile disc system using laser diode

Abstract

A Read-only Holographic Versatile Disc (HVD-ROM) system, using a laser diode for high capacity and high data transfer rates storage system, is proposed. With the collinear technologies' unique configuration the optical pickup can be designed as small as a DVD's, and can be placed on one side of the disc. With the HVD's special structure, the system can servo the focus/tracking and locate reading/writing address. The experiments and theoretical studies suggest that a laser diode is very suitable as a light source of our HVD-ROM system.