Generation of holographic animation sequences using an elastomer phase mask

Abstract

A novel technique for holographic animation 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 non-uniform 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. Holographic animation at 8 to 25 frames per second is demonstrated for two sequences at recording intervals of 0.105 and 0.21 mm displacements.