Development of optical gas sensors for emission monitoring |
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| N. J. Vasa, I. A. Palani, Rajesh Kona, M. Singaperumal |
- Abstract:
- The global increase in N2O and CO2 levels, which contribute to the greenhouse effect, has been attributed to combustion of biomass and fossil fuels. An optical sensor system capable of measuring concentrations of these species and O2 might be incorporated into combustion-control applications to reduce pollutant emissions and increase fuel efficiency. In addition to measuring the gases in the atmosphere and pollution from traffic and industry, it is important to monitor the work environment, industrial process. A compact, widely tunable coherent optical source based on a difference frequency generation technique in a quasi-phase-matched nonlinear crystal pumped by two single-frequency laser diodes for the detection of various gases is reported. A novel approach of using commercially available fibercoupled super-luminescent diode (SLD) along with a spectrometer is also proposed for such application.
- Keywords:
- gas sensing; trace gas monitoring; difference frequency generation; PPLN; super luminescent diode (SLD)
- Download:
- IMEKO-TC14-2007-38.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC14
- Event name:
- TC14 ISMQC 2007
- Title:
9th Symposium on Measurement and Quality Control in Manufacturing
- Place:
- Chennai/Madras, INDIA
- Time:
- 21 November 2007 - 24 November 2007