HOLOGRAPHIC DATA-STORAGE IN A DX-CENTER MATERIAL

We report on the optical storage of digital data in a semiconductor sa mple containing DX centers. The diffraction efficiency and the bit-err or-rate performance of multiplexed data images are shown to agree well with a simple model of the material. Uniform storage without an expos ure schedule is demonstrated. :The volume sensitivity is found to be s imilar to 10(3) times that of LiNBO3:Fe. The importance of coherent ad dition of scattered light with diffracted light in holographic data st orage is discussed. (C) 1997 Optical Society of America.