双振子模型手性分子介质的二次谐波理论

Second harmonic theory of two coupled oscillators in chiral molecular media

推导了在二次谐波条件下耦合双振子模型手性分子的一阶超极化率 ,给出了薄膜手性介质的二阶极化率 ,分析了分子的微观参量对二次谐波产生效率的影响 .理论计算所得的偏振旋转角谱和已有的实验结果相符 .

We have derived the hyperpolarizability of a chiral molecule from the model of coupled two-oscillators in second-harmonic generation. We gave the susecptibility of a thin film. We discussed the influence of microscopic parameters of a molecule on the efficiency of second-harmonic generation through the relationship of hyperpolarizabilities and susceptibilities, We also have simulated the spectrum of rotational angle of polarization state. Our theoretical results fit the known experimental facts.