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Photoacoustic Detection in the Michelson Interferometer Cavity

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http://www.scirp.org/journal/PaperInformation.aspx?PaperID=47107#.VGGHx2fHRK0

For the first time, we report photoacoustic (PA) signal detection in a cell placed within the Michelson interferometer cavity in an attempt to relate photoacoustic effect to the Michelson fringe shift as a result of changes in the cell. Both detection schemes were investigated using IR absorption and their sensitivities compared. Signals related to Michelson interferometer fringe and PA effect have shown good correlations with each other using different samples including some essential oils and their corresponding plant part from which the essential oil is usually obtained. Results were encouraging and will open the door widely to use the combined Michelson interferometer-photoacoustic spectroscopy (PAS) in trace gas detection for different applications.
Cite this paper
Taha, M. and Jabr, A. (2014) Photoacoustic Detection in the Michelson Interferometer Cavity. Journal of Modern Physics, 5, 763-772. doi: 10.4236/jmp.2014.59086. 
 

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