谐振腔方式增强拉曼效应的研究  

A Study on Resonant Cavity for Raman Enhancement Effect

作　　者：王洋[1] 蒋书波[1] 王凡[1] 

机构地区：[1]南京工业大学电气工程与控制科学学院,江苏南京211816

出　　处：《电子器件》2017年第1期22-26,共5页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目(61308066)

摘　　要：拉曼效应因其拉曼散射强度低,用于物质的定量分析时,灵敏度过低的缺点使其在广泛应用时受到阻碍,需要寻找方法实现拉曼增强。设计从谐振腔基本理论出发,重点分析了谐振腔腔长与拉曼散射强度的关系,通过腔与腔之间的模式匹配来减小腔内的激光损耗,最终实现拉曼光的增强。实验结果显示,谐振腔样品池内的拉曼信号显著增强,验证了谐振腔方式增强拉曼效应方法的可行性。Raman spectrum is limited by poor measurement sensitivity due to the low sacttering intensity when it is used in quantitative analysis of materials. Therefore, searching an effecive way to achieve Raman enhancement is necessary. The design is based on the theory and focused on analysis of the relationship between the resonant cavity length and Raman scattering intensity. The loss of the resonant cavity is signifcantly reduced after the mode matching between cavities, and ultimately the Raman optical enhance is achieved. The experimental results show that the Raman signal in the sample cell of the resonant cavity is significantly enhanced, and the feasibility of the method is verified by the method of resonant cavity enhanced Raman effect.

关 键 词：拉曼效应 拉曼增强 谐振腔 模式匹配 

分 类 号：O657.37[理学—分析化学]