Perturbation theory and experimental studies on anisotropy of organic molecular films

The optical anisotropy of organic molecular films induced by molecular reorientation was investigated by using the perturbation method. We presented theoretical formulae about the dependence of second harmonic generation (SHG) intensity on the polarization of fundamental beam, SHG beam and the dipping direction. The experimental studies and discussion were given under some special conditions. The experimental results agreed well with the theoretical calculation.