Holographic grating formation in dry photopolymer film with shrinkage

• 来源期刊: 中国物理（英文版）
• 关键词: photopolymer holographic grating shrinkage
• 年，卷（期）: 2004,（9）
• 页码范围: 1428-1431
• 页数: 4页
• 语种: 英文

摘要

An important issue in developing applications for photopolymers in holography is the effect of shrinkage on recording properties. In this paper, we introduce a model to describe real-time formation of a single grating in photopolymers at any geometrical angle, under the assumption that the shrinkage is in proportion to the polymerization. This model combines polymerization kinetics with the coupled-wave theory, explaining the shrinkage effect on the diffraction efficiency. The model is validated by comparing its predictions with the experimental results for a film of 99μm thickness.