Ultrarapid spectroscopic gas detection via frequency-agile and compressed sensing

In this work, taking the measurement of the absorption spectrum of acetylene gas at 6534.36 cm −1 as an example, an ultrarapid spectroscopic gas detection method based on frequency-agile and compressed sensing has been proposed and experimentally demonstrated. The frequency-agile technique is used t...

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Bibliographic Details
Published in:Applied physics. B, Lasers and optics Lasers and optics, 2022-04, Vol.128 (4), Article 66
Main Authors: Yuan, Ziyue, Lou, Xiutao, Chu, Qi, Li, Tianfu, Dong, Yongkang
Format: Article
Language:English
Subjects:
Absorption spectra
Acetylene
Algorithms
Applied physics
Correlation coefficients
Engineering
Gas sensors
Lasers
Matched pursuit
Optical Devices
Optics
Photonics
Physical Chemistry
Physics
Physics and Astronomy
Principal components analysis
Quantum Optics
Regular Paper
Spectroscopy
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Summary:In this work, taking the measurement of the absorption spectrum of acetylene gas at 6534.36 cm −1 as an example, an ultrarapid spectroscopic gas detection method based on frequency-agile and compressed sensing has been proposed and experimentally demonstrated. The frequency-agile technique is used to quickly and randomly scan the frequency of the probe light for obtaining stochastically sampled transmission spectrum data. The compressed sensing process includes the principal component analysis algorithm which obtains the sparse representation of the transmission spectrum, and the orthogonal matching-pursuit algorithm for reconstructing the transmission spectrum. The experimental results show a high degree of consistency between the original and the reconstructed transmission spectra (correlation coefficient > 0.99). With fewer sampling data, the gas sensing speed is increased by 13 times with 93% reduction in spectral data achieved.
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-022-07781-3