Improved low concentration gas detection system based on intracavity fiber laser
2011 (English)In: Review of Scientific Instruments, ISSN 0034-6748, E-ISSN 1089-7623, Vol. 82, no 2, 023104- p.Article in journal (Refereed) Published
The improvement of a low concentration gas detection system based on the intracavity fiber laser is proposed in this paper. The sensitivity of the system is deduced based on Lambert-Beer law. The optimized system was established with the gas cell made elaborately. In order to apply the wavelength sweeping technique, the fiber Bragg grating reflector was substituted by the wavelength independent Faraday rotation reflector. The sensitivity of the system for acetylene detection is reduced to less than 100 ppm by using the average of three absorption spectra. The acetylene detection coefficients of variation with different concentrations are measured. The gas measurement system is validated to detect low concentration gas effectively.
Place, publisher, year, edition, pages
2011. Vol. 82, no 2, 023104- p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-31595DOI: 10.1063/1.3534077ISI: 000287813400004ScopusID: 2-s2.0-79952133896OAI: oai:DiVA.org:kth-31595DiVA: diva2:406384
QC 201103252011-03-252011-03-212011-03-25Bibliographically approved