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Conferences > CLEO_SI > 2019 > JW2A > JW2A.22

Multi-harmonic detection of methane using 3.2 µm mid-IR DFB laser for environmental sensing applications

Caio Azevedo, Luil Menberu, Devonte Doward, MH Hlaing, and M. Amir Khan

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Abstract

We show advantages of higher harmonic 2f and 4f-wavelength modulation spectroscopic detection for improving sensitivity in methane detection. A spectral-line analysis in the wing region is used to achieve 1-sec. precision of 0.3% or 5 ppbv.

© 2019 The Author(s)

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