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Remote sensing using open-path dual-comb spectroscopy



Kevin Cossel, Eleanor M. Waxman, Esther Baumann, Fabrizio Giorgetta, Brian Washburn, Caroline Alden, Sean Coburn


Open-path dual-comb spectroscopy (DCS) is an emerging technique for long open-path measurements across km-scale paths. It provides both broad spectral coverage over hundreds of wavenumbers with high spectral resolution and negligible instrument lineshape. In this chapter we discuss the principle of open-path DCS, provide an overview of the necessary technology and analysis techniques, review field applications including near-IR measurements of urban CO2 emissions, CH4 emissions from drilling and agricultural operations, measurements to a UAV, and recent measurements of VOCs in the mid-IR, and finally provide an outlook especially on how this technique can move to additional spectral regions beyond the near- and mid-IR.
Advances in Spectroscopic Monitoring of the Atmosphere
Publisher Info
Elsevier, Amsterdam,


frequency combs, spectroscopy, atmospheric measurements, greenhouse gas


Cossel, K. , Waxman, E. , Baumann, E. , Giorgetta, F. , Washburn, B. , Alden, C. and Coburn, S. (2021), Remote sensing using open-path dual-comb spectroscopy, Advances in Spectroscopic Monitoring of the Atmosphere, Elsevier, Amsterdam, , [online], (Accessed April 21, 2024)
Created January 1, 2021, Updated February 23, 2023