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Submicron confocal Raman imaging of holograms in multicomponent photopolymers

机译:多组分光聚合物中全息图的亚微米共聚焦拉曼成像

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We report submicron chemical imaging of optical holograms in multicomponent photopolymers using a confocal scanning Raman microscope. The microscope is sensitive to the submicron, similar to 1% concentration variations of the polymeric components that form refractive index modulations (Delta n) responsible for hologram diffraction. Concentration variations are established by both small molecule diffusion and polymer matrix swelling during hologram writing. Both density and composition variations contribute to Delta n. These measurements demonstrate that submicron Raman microscopy is applicable to multicomponent organic, inorganic, and hybrid materials as a route to correlate materials chemistry/morphology with their physical properties. (C) 1998 American Institute of Physics. [References: 26]
机译:我们报告使用共聚焦扫描拉曼显微镜在多组分光聚合物中的光学全息图的亚微米化学成像。显微镜对亚微米敏感,类似于形成全息图衍射的折射率调制(Delta n)的聚合物成分的1%浓度变化。浓度变化是通过全息图写入过程中的小分子扩散和聚合物基质溶胀确定的。密度和成分变化均对Delta n有所贡献。这些测量结果表明,亚微米拉曼显微镜适用于多组分有机,无机和杂化材料,是将材料的化学/形态与其物理性质相关联的途径。 (C)1998美国物理研究所。 [参考:26]

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