| 腔衰荡吸收多指数模型研究 |
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| 引用本文： | 马辉,董国轩.腔衰荡吸收多指数模型研究[J].光谱学与光谱分析,1998,18(2):135-138. |
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| 作者姓名： | 马辉 董国轩 |
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| 作者单位： | 清华大学现代应用物理系 |
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| 摘 要： | 本文建立了考虑激光线宽影响后腔衰荡的多指数吸收模型，推导出了对数衰荡函数的多项式拟合公式。
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| 关 键 词： | 腔衰荡 激光光谱 CRD吸收光谱 吸收光谱 |
A MULTIEXPONENTIAL MODEL IN CAVITY RING DOWN ABSORPTION SPECTROSCOPY |
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| H Ma,G Dong,Q He,F Zhu,K Jiang,D Chen.A MULTIEXPONENTIAL MODEL IN CAVITY RING DOWN ABSORPTION SPECTROSCOPY[J].Spectroscopy and Spectral Analysis,1998,18(2):135-138. |
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| Authors: | H Ma G Dong Q He F Zhu K Jiang D Chen |
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| Institution: | Department of Modern Applied Physics, Center for Atomic and Molecular Science, Tsinghua University, Beijing. |
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| Abstract: | A multiexponential model of cavity ring down absorption spectroscopy is established for taking into account the laser linewidth effects.It is demonstrated that by fitting the logarithmic ring down function to a truncated polynomial,absorption coefficent can be extracted from coefficients of the first as well as higher order terms of the fitted polynomial.The new fit model results in higher accuracy and broader dynamic range than the previous single exponential model. |
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| Keywords: | Cavity ring down Laser spectroscopy Absorption Trace detection |
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