研究分子非线性光学特性的新技术——超瑞利散射技术

A Newly Developed Hyper Rayleigh Scattering (HRS) Technique for the Study of the Nonlinear Optical Properties of Molecules

介绍了九十年代发展起来的超瑞利散射（ＨＲＳ）技术的简史、理论、研究意义以及作者目前的研究工作。ＨＲＳ是溶液或气体中分子的二阶或高阶非相干散射，通过ＨＲＳ技术不仅可以测定分子的超极化率，还可以了解分子结构和分子间的相互作用。给出了ＨＲＳ技术的实验装置及分析方法，并总结了其优越于传统的电场诱导二次谐波产生（ＥＦＩＳＨＧ）技术的一些特点。

A newly developed hyper Rayleigh scattering (HRS) technique can be used for the determination of the hyperpolarizability value of nonlinear molecules in solution or gas. The HRS signal can reflect both the intrinsic molecular properties and the intermolecular interactions. In this paper, the history, theory, research significance of the HRS technique and the current studies of the authors are presented. The HRS experimental set up and the analysis method are described and the advantages of the HRS over the classical EFISHG (electric field induced second harmonic generation) technique are also summarized.