一种远距离LIBS检测系统设计方案  

A Design Scheme for Remote LIBS Detection System

作　　者：马悦 牟涛涛 陈少华 MA Yue;MU Taotao;CHEN Shaohua(Academy of Instrument Science and Optoelectronic Engineering,Beijing Information Science and Technology University,Beijing 100192,China)

机构地区：[1]北京信息科技大学仪器科学与光电工程学院,北京100192

出　　处：《传感器世界》2025年第2期28-36,42,共10页Sensor World

基　　金：国家自然科学基金(No.62003047);2022年度北京市属高校优秀青年人才培育计划项目(No.BPHR202203230)

摘　　要：为实现远距离的激光诱导击穿光谱(Laser-inducedBreakdownSpectroscopy,LIBS)信号探测,设计了一个远程LIBS探测系统。为略过LIBS信号产生早期的连续辐射信号,该系统采用DG645数字延时发生器进行时序控制,通过控制激光器和中阶梯光栅光谱仪得到物质的LIBS信号。对采集到的LIBS信号进行数据处理,并在NIST数据库中查找元素标准峰,实现了在3 m的远距离下对金属铜、铝、黄铜和矿石混合物(白云石)的LIBS信号检测。A remote LIBS detection system was designed to achieve long-distance detection of laser-induced breakdown spectroscopy(LIBS)signals.In order to skip the LIBS signal and generate early continuous radiation signals,the system uses a DG645 digital delay generator for timing control,and obtains the LIBS signal of the substance by controlling the laser and the mid step grating spectrometer.We processed the collected LIBS signals and searched for element standard peaks in the NIST database,achieving LIBS signal detection of copper,aluminum,brass,and ore mixtures(dolomite)at a distance of 3 m.

关 键 词：激光诱导击穿光谱 远距离探测 中阶梯光栅光谱仪 

分 类 号：O433.4[机械工程—光学工程]