Sensors | |
Chirped Laser Dispersion Spectroscopy for Remote Open-Path Trace-Gas Sensing | |
Michal Nikodem1  | |
[1] id="af1-sensors-12-16466">Electrical Engineering Department, Princeton University, Princeton, NJ 08540, U | |
关键词: optical dispersion spectroscopy; laser spectroscopy; remote sensing; quantum cascade lasers; | |
DOI : 10.3390/s121216466 | |
来源: mdpi | |
【 摘 要 】
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.
【 授权许可】
CC BY
© 2012 by the authors; licensee MDPI, Basel, Switzerland
【 预 览 】
Files | Size | Format | View |
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RO202003190040711ZK.pdf | 1337KB | download |