Submicron confocal Raman imaging of holograms in multicomponent photopolymers
Submicron confocal Raman imaging of holograms in multicomponent photopolymers
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多组分光聚合物中全息图的亚微米共焦拉曼成像
DOI：
10.1063/1.476104
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发表时间：
1998
影响因子：
4.4
通讯作者：
M. Schilling
中科院分区：
文献类型：
--
作者：
C. Kagan;T. Harris;A. Harris;M. Schilling
我们报告了使用共焦扫描拉曼显微镜对多组分光聚合物中的光学全息图进行亚微米化学成像。显微镜对亚微米、约 1% 的聚合物成分浓度变化敏感，这些聚合物成分形成负责全息图衍射的折射率调制 (Δn)。在全息图写入过程中，小分子扩散和聚合物基质膨胀会产生浓度变化。密度和成分变化都会影响 Δn。这些测量表明，亚微米拉曼显微镜适用于多组分有机、无机和混合材料，作为将材料化学/形态与其物理性质相关联的途径。
We report submicron chemical imaging of optical holograms in multicomponent photopolymers using a confocal scanning Raman microscope. The microscope is sensitive to the submicron, ∼1% concentration variations of the polymeric components that form refractive index modulations (Δn) 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 Δn. 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.