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Sensors 2012, 12(12), 16466-16481; doi:10.3390/s121216466
Article

Chirped Laser Dispersion Spectroscopy for Remote Open-Path Trace-Gas Sensing

 and *
Received: 29 August 2012; in revised form: 26 October 2012 / Accepted: 21 November 2012 / Published: 28 November 2012
(This article belongs to the Special Issue Laser Sensing and Imaging)
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Abstract: In this paper we present a prototype instrument for remote open-path detection of nitrous oxide. The sensor is based on a 4.53 μm quantum cascade laser and uses the chirped laser dispersion spectroscopy (CLaDS) technique for molecular concentration measurements. To the best of our knowledge this is the first demonstration of open-path laser-based trace-gas detection using a molecular dispersion measurement. The prototype sensor achieves a detection limit down to the single-ppbv level and exhibits excellent stability and robustness. The instrument characterization, field deployment performance, and the advantages of applying dispersion sensing to sensitive trace-gas detection in a remote open-path configuration are presented.
Keywords: optical dispersion spectroscopy; laser spectroscopy; remote sensing; quantum cascade lasers optical dispersion spectroscopy; laser spectroscopy; remote sensing; quantum cascade lasers
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Nikodem, M.; Wysocki, G. Chirped Laser Dispersion Spectroscopy for Remote Open-Path Trace-Gas Sensing. Sensors 2012, 12, 16466-16481.

AMA Style

Nikodem M, Wysocki G. Chirped Laser Dispersion Spectroscopy for Remote Open-Path Trace-Gas Sensing. Sensors. 2012; 12(12):16466-16481.

Chicago/Turabian Style

Nikodem, Michal; Wysocki, Gerard. 2012. "Chirped Laser Dispersion Spectroscopy for Remote Open-Path Trace-Gas Sensing." Sensors 12, no. 12: 16466-16481.


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