POLYMERS WITH PERIODIC STRUCTURE INDUCED BY NONLINEAR OPTICS

在这个项目中，可以获得以下光学器件发展的基本结果。1)利用基次谐波与次谐波干涉波的三阶非线性光学效应，沿波程形成周期的χ^<(2)>结构，形成相位匹配的光波导。2)调制紫外光（1 ~ 200 Hz）诱导的光化学反应或紫外光激光的干涉产生折射率分布有序的时空结构。

In this project, the following fundamental results for the development of optical device could be obtained.1) The periodic χ^<(2)> structure was developed along the wave path by the third order nonlinear optical effects of the interference waves between fundamental and second harmonic waves and the formed χ^<(2)> structure leaded to the formation of the phase matched optical waveguide.2) Photochemical reaction induced by the modulated ultraviolet light (1 - 200 Hz) or the interference of ultraviolet laser light produced the spatiotemporal structure with ordered refractive index distribution.