CO2 Phase and Amplitude Spectra Measured over 2 km Outdoor Path With a Dual-Comb Spectrometer

I. Coddington; F. R. Giorgetta; G. B. Rieker; W. C. Swann; A. M. Zolot; L. C. Sinclair; E. Baumann; C. Cromer; N. R. Newbury

doi:10.1117/12.2061931

12 September 2014 CO₂ phase and amplitude spectra measured over 2 km outdoor path with a dual-comb spectrometer

I. Coddington, F. R. Giorgetta, G. B. Rieker, W. C. Swann, A. M. Zolot, L. C. Sinclair, E. Baumann, C. Cromer, N. R. Newbury

Author Affiliations +

Proceedings Volume 9219, Infrared Remote Sensing and Instrumentation XXII; 921907 (2014) https://doi.org/10.1117/12.2061931
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

Abstract

We present dispersive dual-comb spectroscopy of atmospheric CO₂ across a 2-km open-air path. By sending a single comb through the open-air path, both molecular phase spectrum and conventional absorbance spectrum are obtained. The measured phase spectra match expected molecular lineshape models.

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I. Coddington, F. R. Giorgetta, G. B. Rieker, W. C. Swann, A. M. Zolot, L. C. Sinclair, E. Baumann, C. Cromer, and N. R. Newbury "CO₂ phase and amplitude spectra measured over 2 km outdoor path with a dual-comb spectrometer", Proc. SPIE 9219, Infrared Remote Sensing and Instrumentation XXII, 921907 (12 September 2014); https://doi.org/10.1117/12.2061931

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