Optical Gas Sensing in Atmosphere

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Atmospheric Techniques, Instruments, and Modeling".

Deadline for manuscript submissions: closed (8 March 2022) | Viewed by 3102

Special Issue Editors

Key Laboratory of Intelligent Manufacturing Technology, Ministry of Education, College of Engineering, Shantou University, 243 Daxue Road, Shantou 515063, China
Interests: laser spectroscopy technology; trace gas detection; infrared sensing system
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Guest Editor
Satellite Research Centre, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang 639798, Singapore
Interests: small satellite development; satellite instrumentation for atmospheric remote sensing; optical and infrared remote sensing on cubesat platforms; stratospheric sudden warmings; atmospheric coupling and stratosphere–mesosphere dynamics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Atmosphere dedicates this Special Issue to monitor gases in the atmospheric environment based on optical technology. Different gases have different characteristics, and gas sensing is a vital tool for understanding atmospheric and environmental changes. It is well known that atmospheric gas sensing should be a local effort conducted in concert with global partners; hence, gas sensing with high sensitivity and stability is needed urgently.

Optical sensing methods based on laser spectroscopy are advantageous for atmospheric monitoring in terms of size, cost, and requiring no pretreatment and accumulation of the concentration of the targeted gas samples. In addition, optical methods provide high-precision remote sensing capabilities, fast response, low-detection high stability. Today, laser spectroscopy, including infrared absorption spectroscopy, photoacoustic spectroscopy, and photothermal spectroscopy, is widely adopted for environmental monitoring.

In light of environmental monitoring, we invite you to contribute articles to this Special Issue by reporting on environmental monitoring using laser gas sensing techniques, in particular advanced methods. Potential topics include but are not limited to the following:

  1. Photoacoustic spectroscopy;
  2. Tunable diode laser spectroscopy;
  3. Cavity-enhanced spectroscopy;
  4. Laser Raman spectroscopy;
  5. Heterodyne laser spectroscopy;
  6. Photothermal spectroscopy;
  7. Optical sensing technique;
  8. Optical gas sensors applications;
  9. Frequency comb spectroscopy;
  10. Laser sources for spectroscopy.

Dr. Weilin Ye
Dr. Amal Chandran
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Atmosphere is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Environmental monitoring
  • Atmospheric monitoring
  • Optical gas sensing
  • Spectroscopy sensing
  • Laser spectroscopy
  • In situ real-time applications

Published Papers (1 paper)

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Research

12 pages, 2730 KiB  
Article
Measurement of CO2 by Wavelength Modulated Reinjection Off-Axis Integrated Cavity Output Spectroscopy at 2 μm
by Zihao Yuan, Yinbo Huang, Xingji Lu, Jun Huang, Qiang Liu, Gang Qi and Zhensong Cao
Atmosphere 2021, 12(10), 1247; https://doi.org/10.3390/atmos12101247 - 25 Sep 2021
Cited by 6 | Viewed by 1860
Abstract
A high sensitivity wavelength modulated reinjection off-axis integrated cavity output spectroscopy (WM-RE-OA-ICOS) experimental setup was built at a 2 μm band. On the basis of an off-axis integrated output spectroscopy (OA-ICOS), combined with an optical reinjection (RE) approach to improve signal intensity, and [...] Read more.
A high sensitivity wavelength modulated reinjection off-axis integrated cavity output spectroscopy (WM-RE-OA-ICOS) experimental setup was built at a 2 μm band. On the basis of an off-axis integrated output spectroscopy (OA-ICOS), combined with an optical reinjection (RE) approach to improve signal intensity, and wavelength modulation spectroscopy (WMS) to improve the signal-to-noise ratio (SNR) of the system, the experimental study of trace CO2 with high sensitivity was carried out using the setup. The performance was compared and evaluated, and the results show that: Compared with the OA-ICOS, the wavelength modulated reinjection OA-ICOS enhanced the signal intensity by 6.3 times, and the SNR increased 7.2 times from 179 to 1288. The Allan variance results showed that the detection limit of the system is 0.35 ppm when the average system time is 230 s. The setup was used to measure the indoor CO2 concentration for a long time (22 h), and the measured results were in line with the actual concentration change. The proposed method shows good performance enhancement for the OA-ICOS system in trace gas measurements. Full article
(This article belongs to the Special Issue Optical Gas Sensing in Atmosphere)
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