Temporal correlation scheme for spectroscopic gas analysis using multimode diode lasers
(2005) In Applied Physics Letters 86(18).- Abstract
- The reliability of diode lasers used in spectroscopic applications is limited by their intrinsic multimode and mode-jump behavior when wavelength-tuned by current or temperature. We report on a scheme for gas analysis based on temporal correlation between absorption signals from an unknown external and a known reference gas concentration, simultaneously recorded when the diode laser wavelength is temperature-tuned across absorption features of the gas of interest. This procedure, which does not require any knowledge of the exact spectrum, also eliminates light intensity fluctuations due to mode competition. The method is illustrated for atmospheric oxygen absorption applied to diffusion measurements.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/239187
- author
- Somesfalean, Gabriel LU ; Sjöholm, Mikael LU ; Persson, Linda LU ; Gao, H ; Svensson, Tomas LU and Svanberg, Sune LU
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Applied Physics Letters
- volume
- 86
- issue
- 18
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- wos:000229288700059
- scopus:20844437071
- ISSN
- 0003-6951
- DOI
- 10.1063/1.1921351
- language
- English
- LU publication?
- yes
- id
- ac7a890a-6c85-4de7-a19b-d70a65f2dede (old id 239187)
- date added to LUP
- 2016-04-01 12:36:22
- date last changed
- 2022-03-13 20:11:05
@article{ac7a890a-6c85-4de7-a19b-d70a65f2dede, abstract = {{The reliability of diode lasers used in spectroscopic applications is limited by their intrinsic multimode and mode-jump behavior when wavelength-tuned by current or temperature. We report on a scheme for gas analysis based on temporal correlation between absorption signals from an unknown external and a known reference gas concentration, simultaneously recorded when the diode laser wavelength is temperature-tuned across absorption features of the gas of interest. This procedure, which does not require any knowledge of the exact spectrum, also eliminates light intensity fluctuations due to mode competition. The method is illustrated for atmospheric oxygen absorption applied to diffusion measurements.}}, author = {{Somesfalean, Gabriel and Sjöholm, Mikael and Persson, Linda and Gao, H and Svensson, Tomas and Svanberg, Sune}}, issn = {{0003-6951}}, language = {{eng}}, number = {{18}}, publisher = {{American Institute of Physics (AIP)}}, series = {{Applied Physics Letters}}, title = {{Temporal correlation scheme for spectroscopic gas analysis using multimode diode lasers}}, url = {{https://lup.lub.lu.se/search/files/2991828/2370779.pdf}}, doi = {{10.1063/1.1921351}}, volume = {{86}}, year = {{2005}}, }