A Carbon Dioxide Sensor Based on cw- Cavity Ring Down Spectroscopy

2003-01-2549

07/07/2003

Event
International Conference On Environmental Systems
Authors Abstract
Content
An optical sensor for the detection of carbon dioxide concentrations and stable isotope ratios is described. Either a continuous wave, fiber-coupled distributed feedback laser or an external cavity laser is used to pump an optical cavity absorption cell in cw-Cavity Ringdown Spectroscopy (cw-CRDS). This technique exploits the sensitivity enhancements provided by the long effective pathlength from the optical cavity created between two highly reflective mirrors (R>0.9999). The inherently high precision of the technique combined with its rapid data throughput allows for reliable measurements of both concentration and the isotopic composition of the sampled carbon dioxide. Data collected using a prototype of this sensor could be useful for monitoring module occupancy, crew health (through breath tests), and plant growth chambers.
Meta TagsDetails
DOI
https://doi.org/10.4271/2003-01-2549
Pages
7
Citation
Awtry, A., and Miller, J., "A Carbon Dioxide Sensor Based on cw- Cavity Ring Down Spectroscopy," SAE Technical Paper 2003-01-2549, 2003, https://doi.org/10.4271/2003-01-2549.
Additional Details
Publisher
Published
Jul 7, 2003
Product Code
2003-01-2549
Content Type
Technical Paper
Language
English