一种新型有机非线性光学材料的光折效应及其产生机理

The Photorefractive Effect of a Novel Organic Nonlinear Optical Material and the Photorefractve Principle.

本文介绍了一种新近研制的光折聚合物。实验表明，除去吸收和反射，入射光束经聚合物后的第一布拉格衍射效率高达８６％，材料也显示出双光束耦合的净增益高于２４０ｃｍ（－１）。这些结果表明，这种新研制的光折聚合物材料是替代无机光折晶体的实用材料。

This paper introdunces a novel organic photorefractive polymer and the photorefravtive principle. In the PR material,large(～10(-3)-10(-2))photoinduced refractive index changes can be generated with very low light power density (～100mw/cm2 or less.)They offer structural flexibility,ease of processing and lower cost compared with commonly used inorganic PR crystals,and yet composite with significantly enhanced performance compared with the existing PR polymers.