Abstract
The photopolymer holographic recording material is composed of a monomer, a binder, a photoinitiator system that contains a sensitizer, a initiator and a hydrogen donor. The photopolymer materials is sensitive to red light (633nm), the effective exposure sensitivity of the photopolymer plate can be increased by adding the third beam to expose the photopolymer plate simultaneously during the initial holographic exposure. Mechanisms of photoinitiatng polymerization and hologram formation are discussed. More than 80% of reflection grating diffraction efficiency can be obtained. The holographic gratings have a good physical and chemical stability under ambient conditions.
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