Journal
LASER PHYSICS
Volume 31, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1555-6611/abd9af
Keywords
supercontinuum absorption spectroscopy; mid-infrared light sources; tellurite glasses; optical fibers
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Funding
- French Investissements d'Avenir program (ISITE-BFC) [ANR-15-IDEX-0003]
- Council of the French Region Bourgogne Franche-Comte
- European program FEDER, through the grant 'Jeune Chercheur Entrepreneur' scheme
- French CNRS
- Japanese JSPS through the PRC CNRS-JSPS Program
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This article reports on mid-infrared gas spectroscopy measurements using the supercontinuum absorption spectroscopy method, where an 80 MHz-repetition-rate mid-infrared SC light source was developed with an average power of 40 mW through nonlinear propagation. Experimental results demonstrate promising applications in the analysis of CO2 and CH4 gases and their mixture.
We report on mid-infrared gas spectroscopy measurements by means of the supercontinuum (SC) absorption spectroscopy method. We developed a 80 MHz-repetition-rate mid-infrared SC light source with an average power of 40 mW generated through nonlinear propagation of 200 fs pulses in a 10 cm-long segment of step-index tellurite fiber. A compact multipass cell is used for analyzing absorption of CO2 and CH4 gases and their mixture in the 2-3.5 mu m spectral range. Experimental results are compared to the HITRAN database.
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