Photopolymerizable material for holographic recording in the 450-550 nm domain: characterization and applications II

For pt.I see ibid., vol.21, p.147, 1990. Holographic recording materials based on photopolymers are becoming available in the 450-550 nm range. They are used for transmission holography and to generate permanent thick phase gratings. The formulation embedded between two glass plates undergoes inhomogeneous conversion of monomers to polymer in proportion of the received local dose of light. Maximum efficiencies exceeding 75% are readily obtained for a reference to object intensity ratio around three. In spite of a low energetic sensitivity compared with silver halide emulsions, their outstanding advantage is to generate in situ, with great simplicity of use, images which are stable for more than one year. They are ideally suited for holographic interferometry and volume phase hologram storage with laser light in the blue to yellow range.