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中国无机分析化学:2024,14(6):795-800
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激光波长对拉曼光谱检测地质成分的影响
(中国原子能科学研究院核物理研究所)
Effect of laser wavelength in Raman spectrum detection of geological components
WANG Jiaohao1,2, HU Ling1,2, ZHANG Xiaohua1,2, LIU Qiushi1,2, GAO Zhixing1,2, HE Yun1,2, LI Qinxiang1,2, ZHAO Baozhen1,2
(1.China Institute of Atomic Energy,Department of Nuclear Physics,Beijing,102413;2.China)
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投稿时间:2024-02-19    修订日期:2024-02-26
中文摘要: 随着激光技术的不断发展,以激光为光源的拉曼光谱检测技术由于其快速、无损、无接触探测等优势,已成为地质样品成分鉴别的一种重要途径。由于激光波长是样品拉曼效应的重要决定因素之一,进一步明确其在地质样品成分检测中的影响,能够为开展行星矿物成分研究提供重要参考依据。本工作基于自主建立的532nm/785nm双色光源激光拉曼光谱探测系统,开展了不同激光波长对地质样品成分拉曼光谱的影响研究,获得了包括硝酸根、碳酸根、磷酸根、硅酸根等分子基团以及硫化物、氧化物等多种地质样品主要成分的拉曼特征光谱。通过对比表明,532nm激发光具有更高的光子能量,能够检测更多的样品成分,但荧光效应较强,785nm激发光存在拉曼信号强度较低问题,但是具有很好的荧光抑制效果,可根据实际样品种类进行最佳激发光波长的选择。
Abstract:With the continuous development of laser, Raman spectroscopy detection technology based on laser sources has become an important method for identifying geological sample compositions because of its advantages such as fast, nondestructive and non-contact detection. The laser wavelength is one of the crucial determining factors for the Raman effect in samples. Therefore, further clarification of its impact on the detection of geological sample compositions can provide important references for planetary mineral composition research. In this study, based on a self-established 532nm/785nm dual-wavelength Raman spectroscopy detection system, the influence of different laser wavelengths on the spectroscopy of geological sample compositions was investigated. Characteristic Raman spectra of various geological sample major components, including nitrate, carbonate, phosphate, silicate, as well as sulfides and oxides, were obtained. A comparison indicates that 532nm laser, due to its higher photon energy, could detect more sample components, but has a stronger fluorescence effect. On the other hand, 785nm laser faces the issue of lower Raman intensity, but has a good fluorescence suppression effect. The choice of the optimal laser wavelength could be made based on the actual types of samples.
文章编号:     中图分类号:O433.4 P575.4 ??    文献标志码:
基金项目:国家自然科学基金青年基金项目(12105371和12005305)资助
引用文本:
王嘉豪,胡凌,张晓华,刘秋实,高智星,何运,励钦翔,赵保真.激光波长对拉曼光谱检测地质成分的影响[J].中国无机分析化学,2024,14(6):795-800.
WANG Jiaohao,HU Ling,ZHANG Xiaohua,LIU Qiushi,GAO Zhixing,HE Yun,LI Qinxiang,ZHAO Baozhen.Effect of laser wavelength in Raman spectrum detection of geological components[J].Chinese Journal of Inorganic Analytical Chemistry,2024,14(6):795-800.

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