和频振动光谱的基本原理与应用解剖.doc

目录 和频振动光谱的基本原理及应用..............................2 摘要..............................................................2 Abstract.........................................................2 § 引言..............................................................2 §一、表/界面和频振动光谱研究综述..............................3 §二、和频振动光谱的基本原理....................................4 1.非线性光学的基本原理.........................................4 和频信号产生的缘由..........................................5 和频过程....................................................6 和频光谱实验................................................8 §三、和频振动光谱的应用........................................11 §四、参考文献....................................................12 和频振动光谱的基本原理与应用 韦智友 , 物理与电子信息学院 摘 要：和频振动光谱（SFG）作为二阶非线性光学技术，具有界面选择性和灵敏性，能测量出分子层面的界面信息，包括界面分子取向、结构以及界面分子的动力学信息，是研究界面的最有效手段之一。因此了解这项技术对于了解众多界面信息是很重要的。本文将从三部分介绍该技术，第一部分将对和频振动光谱技术的发展进行综述。第二部分将简述和频振动光谱的基本原理。最后一部分将介绍该项技术的应用。 关键词：非线性光学，二次谐波，极化率 Sum frequency vibrational spectroscopy and application of the basic principles Weizhi You College of Physics and Electronic Information Abstract: Sum frequency vibrational spectroscopy (SFG) as the second-order nonlinear optical technology with interface selectivity and sensitivity, can measure the molecular level interface information, including information interface kinetics of molecular orientation, structure and interface elements, research one of the most effective means of interface. Therefore, understanding the technical information for the understanding of many interface is very important. This article will introduce the technology into three parts, the first part will be the development and frequency of vibration spectroscopic techniques are reviewed. The second part will briefly sum frequency vibrational spectra of the basic principles. The last part describes the application of this technology. Keywords: nonlinear optical ,second harmonic, polarization 引言： 界面现象在自然界随处可见，而且和生命活动密切相关，所以界面研究和多个方面的问题有着紧密的联系。在分析化学，物理化