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A compact mid-infrared dual-comb spectrometer for outdoor spectroscopy



Gabriel Ycas, Fabrizio Giorgetta, Jacob T. Friedlein, Daniel Herman, Kevin Cossel, Esther Baumann, Nathan R. Newbury, Ian Coddington


This manuscript describes the design of a robust, mode-locked laser based, mid-infrared dual- comb spectrometer operating in the 3.1-µm to 4-µm spectral window. The design represents an improvement in signal-to-noise, system size, power consumption and robustness relative to previous work and should be a viable platform to investigate future mid-infrared dual-comb applications in the field. System quality factors of 2×10^6 and 30 hours of continuous operation are demonstrated over a 120-meter outdoor air path
Optics Express


Dual-comb, frequency comb


Ycas, G. , Giorgetta, F. , Friedlein, J. , Herman, D. , Cossel, K. , Baumann, E. , Newbury, N. and Coddington, I. (2022), A compact mid-infrared dual-comb spectrometer for outdoor spectroscopy, Optics Express, [online], (Accessed May 21, 2024)


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Created April 9, 2022, Updated August 17, 2022