Fourier-filtered, fast wavelength-scanned cavity ring-down spectroscopy
Fourier-filtered, fast wavelength-scanned cavity ring-down spectroscopy
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傅立叶滤波、快速波长扫描腔衰荡光谱
DOI：
10.1364/josab.375916
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发表时间：
2020-04
期刊：
影响因子：
--
通讯作者：
Yanjun Du
中科院分区：
文献类型：
--
作者：
Zhen Wang;Zhimin Peng;Yanjun Ding;Yanjun Du
This paper presents accurate measurements of molecular absorption spectra using wavelength-scanned cavity ring-down spectroscopy (CRDS) based on Fourier transforms. The characteristic frequencies of the periodic ring-down time are extracted after the Fourier transform to recover the absorbance and significantly reduce the noise, especially the troublesome wavelength fluctuations. This method is simpler and has lower noise than conventional swept-cavity continuous-wave CRDS (S-CRDS). The smaller fitting residuals of the measured ${\rm CO}_2$CO2 (${6526.374}\;{{\rm cm}^{ - 1}}$6526.374cm−1) and CO (${6371.299}\;{{\rm cm}^{ - 1}}$6371.299cm−1) spectra show that the laser wavelength fluctuation effects are effectively reduced and the spectral SNR is improved. The measured ${\rm N}_2$N2 and Ar perturbed spectral parameters for ${\rm CO}_2$CO2 are consistent with the S-CRDS method results but with smaller uncertainties.
This paper presents accurate measurements of molecular absorption spectra using wavelength-scanned cavity ring-down spectroscopy (CRDS) based on Fourier transforms. The characteristic frequencies of the periodic ring-down time are extracted after the Fourier transform to recover the absorbance and significantly reduce the noise, especially the troublesome wavelength fluctuations. This method is simpler and has lower noise than conventional swept-cavity continuous-wave CRDS (S-CRDS). The smaller fitting residuals of the measured ${\rm CO}_2$CO2 (${6526.374}\;{{\rm cm}^{ - 1}}$6526.374cm−1) and CO (${6371.299}\;{{\rm cm}^{ - 1}}$6371.299cm−1) spectra show that the laser wavelength fluctuation effects are effectively reduced and the spectral SNR is improved. The measured ${\rm N}_2$N2 and Ar perturbed spectral parameters for ${\rm CO}_2$CO2 are consistent with the S-CRDS method results but with smaller uncertainties.
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影响因子：
3.6
作者：
Long DA;Fleisher AJ;Liu Q;Hodges JT
通讯作者：
Hodges JT
DOI：
10.1109/proc.1966.4634
发表时间：
1966-01-01
期刊：
PROCEEDINGS OF THE INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS
影响因子：
--
作者：
ALLAN, DW
通讯作者：
ALLAN, DW
影响因子：
2.4
作者：
Land, D. V.;Levick, A. P.;Whand, J.
通讯作者：
Whand, J.
影响因子：
7.4
作者：
J. Dudek;P. Tarsa;A. Velasquez;Mark Wladyslawski;P. Rabinowitz;K. Lehmann
通讯作者：
J. Dudek;P. Tarsa;A. Velasquez;Mark Wladyslawski;P. Rabinowitz;K. Lehmann
DOI：
10.1021/jp111177c
发表时间：
2011-07
期刊：
The journal of physical chemistry. A
影响因子：
--
作者：
Haifeng Huang;K. Lehmann
通讯作者：
Haifeng Huang;K. Lehmann