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新型含偶氮侧链聚合物中光致各向异性及偏振全息记录
Photoinduced Anisotropy and High Efficiency Optical Storage in Azobenzene Side Chain Polymer
【摘要】 研究了偶氮侧链聚合物中光致各向异性和偏振全息, 确认在这种聚合物中分析光致各向异性动力学过程时, 必须考虑光漂白效应的影响, 测量表明该聚合物具有大的光致双折射(Δn =7.8×10- 3), 并在其中记录了高衍射效率(η= 19.3% )的偏振全息图
【Abstract】 An amorphous polymer containing azo side groups has been investigated regarding to the photoinduced anisotropy and polarization holographic recording. Measurements reveal that the effect of photobleaching process should be taken into account in explaining the experimental results in the azobenzene side chain polymer film and that the polymer possesses large magnitude of photoinduced birefringence ( Δ n= 7.8×10 -3 ). A reversible polarization hologram with high efficiency (19.3%) is recorded with a CW 532 nm laser in this thin film.
【关键词】 光致各向异性;
光致双折射;
衍射效率;
偶氮侧链聚合物;
【Key words】 photoanisotropy; photobirefringence; diffraction efficiency; azo polymer.;
【Key words】 photoanisotropy; photobirefringence; diffraction efficiency; azo polymer.;
【基金】 国家自然科学基金
- 【文献出处】 光学学报 ,ACTA OPTICA SINICA , 编辑部邮箱 ,1999年11期
- 【分类号】TQ594
- 【被引频次】7
- 【下载频次】119