光子晶体光纤的拉曼增强效应研究  

Study on Photonic Crystal Fiber for Raman Enhancement Effect

作　　者：孙中元[1] 蒋书波[1] 王凡[1] 胡佳琳[1] 

机构地区：[1]南京工业大学自动化与电气工程学院,江苏南京211816

出　　处：《仪表技术与传感器》2015年第11期89-92,共4页Instrument Technique and Sensor

基　　金：国家自然科学基金(青年基金)项目(61308066)

摘　　要：拉曼散射是一种弱效应。从拉曼散射及其散射截面角度出发,通过将光子约束在一个极小的截面上并延长传输,即增加了拉曼散射截面,从而达到增强拉曼散射的效果。而光子晶体光纤特有的光子带隙效应与此方式类似,可将某一特定波长的光束缚在中心孔芯内传输。运用光子晶体光纤技术,设计了光子晶体光纤的拉曼效应增强系统。最后通过实验发现:光子晶体光纤用于拉曼效应增强是可行的,为后续微量物质、气体等检测提供了一种比较高效的分析方法。Raman scattering is a weak effect .From the Raman scattering and the scattering cross section theory ,constraining the photons in a minimal section and extending the transmission ,which increases the Raman scattering cross section ,so as to en-hance Raman scattering effect .At the same time,the photonic crystal fiber unique photonic band gap is similar to this way ,which makes the transmission of a specific wavelength of light bounded in the central air hole .Using photonic crystal fiber technology de-signs the system of the photonic crystal fiber for Raman enhancement effect .Finally experiments show that photonic crystal fiber for Raman enhancement is feasible ,thus providing a more efficient method of subsequent analysis of trace substances ,gases and other testing .

关 键 词：拉曼散射 散射截面 光子晶体光纤 微量检测 

分 类 号：TP253[自动化与计算机技术—检测技术与自动化装置]