Low-power portable laser spectroscopic sensor for atmospheric CO2 monitoring

We demonstrate a wireless, portable CO 2 sensor based on laser absorption spectroscopy. Allan variance for long run tests yielded Gaussian noise limited operation up to 100 seconds with ultimate minimum detection limit of 5.1×10 -7 .

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Bibliographic Details
Main Authors: Smith, Clinton J, So, Stephen, Wysocki, Gerard
Format: Conference Proceeding
Language:English
Subjects:
(010.1120) Air pollution monitoring
(120.6200) Spectrometers and spectroscopic instrumentation
(280.3420) Laser sensors
(300.1030) Absorption
(300.6340) Spectroscopy
Absorption
Gas detectors
infrared
Monitoring
Spectroscopy
Stability
Surface emitting lasers
Temperature sensors
Testing
Vertical cavity surface emitting lasers
Wireless sensor networks
Online Access:Request full text
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Description
Summary:We demonstrate a wireless, portable CO 2 sensor based on laser absorption spectroscopy. Allan variance for long run tests yielded Gaussian noise limited operation up to 100 seconds with ultimate minimum detection limit of 5.1×10 -7 .