Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9786146 | Optics Communications | 2005 | 9 Pages |
Abstract
A novel technique for phase-multiplexed holographic storage is reported. Phase codes for recording individual images are generated with an elastomer mask fabricated from silicone. The mask is imprinted with a random phase distribution by using a mold with a nonuniform surface profile. By displacing the elastomer from equilibrium, the optical path length traversed by each point on the reference beam wavefront can be altered, creating a unique phase address for a particular amount of strain. Images are stored in a photorefractive crystal at 0.21 mm (0.22% strain) intervals. Phase selectivity of different masks is variable, with a minimum strain sensitivity for sufficient phase mismatch at 0.06%. Prestrain of the elastomer at 7.1% leads to lower phase selectivity at small strain intervals. Holographic animation at 8-25 frames per second is demonstrated for two sequences at recording intervals of 0.105 and 0.21 mm displacements.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Raphael A. Guerrero,