Abstract

A novel approach to 3D optical information storage based on writing and reading of microscopic holographic gratings in a photopolymer layer is presented. Strongly localized reflection gratings created by two highly focused laser beams are used to replace the pit and land structure of the CD/DVD technology. The holographic recording method presented here allows to employ various multiplexing methods. A combination of wavelength multiplexing and multilayer storage is proposed to achieve storage densities similar to page-oriented holographic data storage. Dynamically induced multiwavelength recording in DuPont HRF polymers as well as multi-layer storage in thick samples of Aprilis CROP photopolymers are reported.

© 2003 Optical Society of America