基于彩色相机RGGB通道的LIBS等离子体图像采集与分析  

Image acquisition and analysis of LIBS plasma using RGB channels of color camera

作　　者：燕群 李守杰 卢渊[1] 田野[1] 翟灿旭 郭金家[1] 叶旺全 郑荣儿[1] YAN Qun;LI Shoujie;LU Yuan;TIAN Ye;ZHAI Canxu;GUO Jinjia;YE Wangquan;ZHENG Ronger(College of Physics and Optoelectronic Engineering,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国海洋大学物理与光电工程学院,山东青岛266100

出　　处：《量子电子学报》2024年第3期446-454,共9页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金(62205320)。

摘　　要：激光诱导击穿光谱(LIBS)是一种基于瞬态等离子体的发射光谱,而实现等离子体成像则对LIBS技术研究至关重要。本工作采用低成本的工业彩色相机实现了LIBS等离子体动态观测,本文以相机RGB通道分离出不同波段下的等离子体成像结果,进而实现对应波段下元素演化情况的动态观测。以铜锌合金靶材进行了方法验证,结果显示所提出的成像方式能够较好地完成不同元素(Zn、Cu、O)扩张情况的表征,且结合带通滤色片可实现更窄波段下的等离子体成像,证明了彩色相机RGB通道用于等离子体成像分析的可行性,为LIBS基础研究提供了一种实用的技术手段。Laser-induced breakdown spectroscopy(LIBS)is an atomic emission spectroscopy technique based on transient plasma,and imaging observation is crucial for LIBS research.An economically viable industrial color camera is employed to facilitate LIBS plasma imaging,utilizing RGB channels of the camera to segregate plasma imaging outcomes across distinct bands,and consequently achieving the dynamic observation of elemental evolution within corresponding bands.The efficacy of this approach was verified through experiment with copper-zinc alloy targets,and the results showed that the proposed method can effectively characterize the expansion of various elements(Zn,Cu,O).Furthermore,combined with bandpass filters,the method can achieve plasma imaging within narrower spectral bands.This validation underscores the feasibility of leveraging the RGB channel of color cameras for plasma imaging analysis,and the proposed method can provide a pragmatic technical avenue for fundamental LIBS research.

关 键 词：光谱学 等离子体成像 RGB通道 时间分辨 激光诱导击穿光谱 

分 类 号：O433[机械工程—光学工程]