| 高灵敏的连续激光光腔衰荡光谱仪及其应用 |
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| 作者姓名： | Song KF Gao B Liu AW Wang N Hu SM |
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| 作者单位： | 中国科学技术大学化学物理系,合肥微尺度物质科学国家实验室,安徽,合肥,230026 |
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| 基金项目： | 国家自然科学基金项目,国家重点基础研究发展计划项日 |
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| 摘 要： | 基于连续可调谐的钛宝石激光光源,建立了光腔衰荡光谱(CRDS)装置,实验表明,其不但具有10-4cm-1的光谱分辨率,测靖灵敏度也好于10-10·cm-1.通过对C2H2气体在12 696.4 cm-1附近的吸收光谱测量,验证了该装置的定量测量能力,并通过对混有痕量C2H2气体的氮气样品的光谱测量,表明该装置对C2H2...
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| 关 键 词： | 光腔衰荡光谱 振转光谱 痕量检测 乙炔 |
A very sensitive CW cavity ring-down spectrometer and its application |
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| Song KF,Gao B,Liu AW,Wang N,Hu SM.A very sensitive CW cavity ring-down spectrometer and its application[J].Spectroscopy and Spectral Analysis,2011,31(3):835-838. |
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| Authors: | Song Ke-feng Gao Bo Liu An-wen Wang Na Hu Shui-ming |
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| Institution: | Department of Chemical Physics, University of Science and Technology of China, Hefei National Laboratory for Physical Sciences at the Microscale, Hefei 230026, China. kfsong@email.ustc.edu.cn |
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| Abstract: | A cavity ring-down spectrometer was built up using a CW tunable Ti: sapphire laser. The experiments show that not only the spectral resolution is up to the 10(-4) cm(-1) level, but the detecting sensitivity also exceeds 10(-10) cm(-1). With the measurements of the absorption spectroscopy of C2H2 near 12,696.4 cm(-1), the quantitative capability of the instrument was demonstrated. Through the spectroscopy of the samples mixed with trace C2H2 in N2 gas, the detection limit of C2H2 was determined to be 0.2 ppm. |
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