Gibson, G., Monk, S.D. and Padgett, M.J. (2002) A field-portable, laser-diode spectrometer for the ultra-sensitive detection of hydrocarbon gases. Journal of Modern Optics, 49(5-6), 769 -776. (doi: 10.1080/09500340110108639)
Full text not currently available from Enlighten.
Publisher's URL: http://dx.doi.org/10.1080/09500340110108639
Abstract
We have developed a field-portable optical gas sensor for the ultra-sensitive detection of ethane. The system is based on an adaptation of a commercially available system, which uses a cryogenically cooled, lead-salt laser diode at 3.34 mu m and a multi-pass astigmatic Herriott sample cell. We have adapted this system to a second derivative wavelength modulation scheme giving a lower detection limit of less than 100 parts per trillion for a one second measurement time. Our custom-designed software controls every aspect of the instrument operation from spectral scanning of the laser diode, to automatic calibration, optical alignment, spectral analysis and complete data logging.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Padgett, Professor Miles |
| Authors: | Gibson, G., Monk, S.D., and Padgett, M.J. |
| Subjects: | Q Science > QC Physics |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Journal of Modern Optics |
| ISSN: | 0950-0340 |
University Staff: Request a correction | Enlighten Editors: Update this record
Deposit and Record Details
Deposit and Record Details