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Cavity enhanced absorption spectroscopy in the mid-infrared using a supercontinuum source

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Original languageEnglish
Number of pages4
JournalApplied Physics Letters
Issue number6
Publication statusPublished - Aug 2017
Publication typeA1 Journal article-refereed


We demonstrate incoherent broadband cavity enhanced absorption spectroscopy in the mid-infrared wavelength range from 3000 to 3450 nm using an all-fiber based supercontinuum source. Multi-component gas detection is performed, and the concentrations of acetylene and methane are retrieved with sub-ppm accuracy. A linear response to nominal gas concentrations is observed, demonstrating the feasibility of the method for sensing applications.

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Field of science, Statistics Finland