Volume holographic storage using polarization multiplexing

摘要

We propose a new holographic multiplexing technique in LiNbO_3 with 90°geometry. The advanced concept of polarization-multiplexed holographic memory is based on photorefractive effect and photovoltaic effect. The holographic gratings are constructed in the crystal using two writing beams with isotropic and anisotropic polarization recording. Even mutually orthogonal polarized waves can be used in holographic storage. The polarization multiplexing technique can be accompanied with other multiplexing method in the holographic storage, and we can increase the storage capacity doubly.