Volume holographic storage using sync-angular multiplexing by rotating material in thick photopolymer

The sync-angular multiplexing by rotating medium is a simple but seldom used technique in recent years. While compared with the regular angular multiplexing, sync-angular multiplexing has the advantage to alleviate the cumulative scattering noise during recording in thick materials. Based on the experimental parameters, the available rotational angle range and spatial selectivity are studied by simulating the recording spot. Experimentally, 150 grey images are sync-angular multiplexed in a 2.0 mm thick PQ/PMMA photopolymer, resulting in an average diffraction efficiency of 0.05% and a storage density of 41.1 GB/cm 3 .