OPTIMIZING THE PERFORMANCE OF VOLUME HOLOGRAPHIC MEDIA

CURRENTLY AVAILABLE VOLUME HOLOGRAPHIC RECORDING MATERIALS OFFER IMPROVED EFFICIENCY, SIGNAL TO NOISE AND ENVIRONMENTAL STABILITY. THE OPTIMUM PREDICTED BEHAVIOR AND PERFORMANCE OF CERTAIN OF THE MOST PROMISING MATERIALS IS INVESTIGATED IN THIS DEVELOPMENT PROPOSAL. DCG IS THE STANDARD FOR PERFORMANCE WITH ALL OTHER MEDIA COMPETING FOR PREFERENCE. THREE MEDIA OF PARTICULAR INTEREST FOR THIS STUDY ARE PVK, DMP-128, AND DUPONT'S PHOTOPOLYMER. EACH OF THESE HAS ENVIRONMENTAL STABILITY ADVANTAGES OVER DCG BUT EACH HAS YET TO BE PUSHED TO PERFORM OPTICALLY IN SPECIFIC CONFIGURATIONS AT OR ABOVE THE LEVEL OF DCG. PVK AND DMP-128 HAVE BOTH BEEN MADE TO PERFORM WELL IN THIN THICK, LOW INDEX GEOMETRIES. THE GENERAL BEHAVIOR AND THE LIMITS OF PERFORMANCE OF THESE MEDIA MEASURED ABSOLUTELY AND COMPARED QUALITATIVELY TO DCG WILL BE DETERMINED. MANUFACTURABILITY OF PRODUCTS IN THE MOST DESIRABLE MEDIA WILL BE STUDIED ON GLASS AND PLASTIC SUBSTRATES. OF PARTICULAR INTEREST IS THE POSSIBILITY OF CONTINUOUS PRODUCTION ON ROLLS OF PLASTIC. THE PRINCIPLE INVESTIGATORS HAVE ALREADY FAMILIARIZED THEMSELVES WITH EACH OF THE PROPOSED MATERIALS AND PERFORMED PRELIMINARY EXPERIMENTS WITH PVK, AND DMP-128. THE COMPANY HAS MADE OVER 1,000,000 DCG HOLOGRAMS ON GLASS OR PLASTIC ALREADY.