基于远程拉曼光谱的物质检测研究

设计和建立轻型远程拉曼光谱探测系统,通过时域脉冲的发射源和数字延时电路实现拉曼信号同步采集,同时采用入瞳口径为50mm的伽利略望远光路增强拉曼信号的收集效率,并对易爆物质进行3m距离检测为例进行研究。其结果显示,系统具有非常高的信噪比、高分辨锐利的特征峰和快速检测能力,能应用于危险环境的识别和预警等方面。

Stand-off Raman Spectrum Detection for Explosive Materials

In this paper,a compact remote Raman spectroscopy detection system through the synchronization between the time domain pulse of the emission source and digital delay circuit are designed and established,where the Galilean telescope with the entrance pupil diameter of 50mm is used to enhance the efficiency of Raman signal collection efficiency.The results show that the system had very high signal-to-noise ratio,high resolution and sharp peak and rapid detection ability,and could be applied to the identification and early warning of dangerous explosives.