Odd harmonics with wavelength modulation spectroscopy for recovering gas absorbance shape.
Odd harmonics with wavelength modulation spectroscopy for recovering gas absorbance shape.
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DOI：
10.1364/oe.20.011976
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发表时间：
2012-05
期刊：
影响因子：
3.8
通讯作者：
Zhimin Peng;Yanjun Ding;Che Lu;Qiansuo Yang
中科院分区：
文献类型：
--
作者：
Zhimin Peng;Yanjun Ding;Che Lu;Qiansuo Yang
本文提出了一种利用波长调制光谱技术恢复气体吸收形状的新方法。我们已经从数学上证明，无论调制深度的值如何，气体吸收形状都可以使用奇次谐波的X和Y分量的数据直接恢复。选择NH3在1531 nm附近的跃迁，利用数值模拟和实验技术恢复吸收形状。仿真和实验结果表明，该方法可以简单、准确地恢复气体吸收形状。
In this paper, a new method for recovering gas absorbance shape using wavelength modulation spectroscopy is proposed. We have mathematically proven that the gas absorbance shape can be directly recovered using the data of X and Y components of odd harmonics, regardless of the value of the modulation depth. The transitions of NH(3) near 1531 nm are selected to recover the absorbance shape using numerical simulation and experimental technique. The simulation and experiment results show that our proposed method can simply and accurately recover the gas absorbance shape.