首页|Raman signal enhancement for gas detection using a dual near-concentric cavities group
Raman signal enhancement for gas detection using a dual near-concentric cavities group
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Effective methods are urgently required to optimize Raman spectroscopy technology to ameliorate its low detection sen-sitivity.Here,we superposed two near-concentric cavities to develop a dual near-concentric cavities group[DNCCG]to assess its effect on gas Raman signal intensity,signal-to-noise ratio[SNR],and limit of detection[LOD].The results showed that DNCCG generally had higher C02 Raman signal intensity than the sum of two near-concentric cavities.Meanwhile,the noise intensity of DNCCG was not enhanced by the superposition of near-concentric cavities.Accordingly,DNCCG increased the SNR.The LOD for C02 was 24.6 parts per million.DNCCG could be an effective method to improve the detection capability of trace gases and broaden the dynamic detection range,which might aid the future development of innovative technology for multicomponent gas detection.
Raman spectroscopygas detectionsensitivitydual near-concentric cavities group
任一凡、杨德旺、孙颖欣、许家旋、刘硕芳、陈月娥
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Key Laboratory for Microstructural Material Physics of Hebei Province,School of Science,Yanshan University,Qinhuangdao 066004,China
College of Ocean Science and Engineering,Shandong University of Science and Technology,Qingdao 266590,China
Highend Foreign Experts Introduction PlanHebei Province Introduced Foreign Intelligence Projects
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