Gibson, G. and Monk, S. D. and Padgett, M. (2002) A field-portable, laser-diode spectrometer for the ultra-sensitive detection of hydrocarbon gases. Journal of Modern Optics, 49 (5-6). pp. 769-776.
Full text not available from this repository.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 mum 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: | Article |
|---|---|
| Journal or Publication Title: | Journal of Modern Optics |
| Additional Information: | 15th National Quanturn Electronics and Photonics Conference, GLASGOW, SCOTLAND, SEP 03-06, 2001 |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Departments: | Faculty of Science and Technology > Lancaster Environment Centre Faculty of Science and Technology > Engineering |
| ID Code: | 34823 |
| Deposited By: | Dr Stephen Monk |
| Deposited On: | 09 Dec 2010 10:12 |
| Refereed?: | No |
| Published?: | Published |
| Last Modified: | 26 Jul 2012 17:41 |
| Identification Number: | |
| URI: | http://eprints.lancs.ac.uk/id/eprint/34823 |
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