Enhancement of storage density in photorefractive disk-type memory with cross polarized four-wave mixing

摘要

In this paper, we propose the nehancement technique of the storage density in the disk-type memory with photorefractive cross polarized four-wave mixing. We calculate the maounts of shift that enable us to distinguish adjacent signals in the directions of the circle and the radius of the disk, and we carry out experiments to verify the analytical results. Also we investigate the temporal property of coross polarized four-wave mixing to estimate the optimum exposure time.