耦合双振子模型手性分子的微观参量对和频过程的影响

Influence of microscopic parameters of chiral molecules with two couple-oscillators model on sum-frequency generation

用经典理论方法推出了适合于耦合双振子模型的手性分子的超极化率 ,给出了分子超极化率与分子微观参量的关系式 .由微观与宏观极化率的关系 ,具体讨论了分子微观参量对宏观介质极化与和频过程产生效率的影响 ,本模型得到的理论结果与已有的实验结果很好地符合 .

In this paper, using the classical theoretical method, we derived the hyperpolarizabilities of chiral molecules applied to the two-coupled-oscillator model and gave the expressions of hyperpolarizabilities with microscopic parameters. We discussed the influence of microscopic parameters on the efficiency of sum-frequency generation through the relationship of hyperpolarizabilities and susceptibilities. The theoretical results obtained from the model are consistent with the known experimental facts.