Patent ID: 6221536
Filing Date: 2001-04-24
Classification: G03F,G03H

Abstract:
A process for holography, comprising irradiating with light to interferometrically expose a recording medium, the recording medium comprising a material that comprises:a polymeric matrix;a photoactive monomer;an expansion agent comprising a cleaving moiety capable of being detached from the agent by a catalytic reaction; andone or more photoinitiators separate from the photoactive monomer and expansion agent or bound to the photoactive monomer, or to both the photoactive monomer and expansion agent, where the one or more photoinitiators, upon irradiation by light, are capable of inducing polymerization of the monomer and detachment of the cleaving moiety,wherein upon the irradiation by light at a temperature of 40.degree. C. or less, the material experiences no more than 0.2% volume shrinkage per molar concentration of polymerized monomer functional groups.