Broadband dual-comb spectroscopy for open-path field measurement of H216O and H218O

Daniel I. Herman; Daniel I. Herman; Fabrizio R. Giorgetta; Fabrizio R. Giorgetta; Kevin C. Cossel; Nathan A. Malarich; Nathan A. Malarich; Lindsay C. Hutcherson; Chinthaka Weerasekara; Jacob M. Cutshall; Jacob M. Cutshall; Nathan R. Newbury; Stephen M. Welch; Brett D. DePaola; Ian Coddington; Eduardo A. Santos; Brian R. Washburn

doi:10.1364/AIS.2021.JTu6E.5

OSA Optical Sensors and Sensing Congress 2021 (AIS, FTS, HISE, SENSORS, ES)
OSA Technical Digest (Optica Publishing Group, 2021),
paper JTu6E.5
•https://doi.org/10.1364/AIS.2021.JTu6E.5

Broadband dual-comb spectroscopy for open-path field measurement of H₂¹⁶O and H₂¹⁸O

Daniel I. Herman, Fabrizio R. Giorgetta, Kevin C. Cossel, Nathan A. Malarich, Lindsay C. Hutcherson, Chinthaka Weerasekara, Jacob M. Cutshall, Nathan R. Newbury, Stephen M. Welch, Brett D. DePaola, Ian Coddington, Eduardo A. Santos, and Brian R. Washburn

Applied Industrial Spectroscopy 2021

Washington, DC United States
19–23 July 2021
ISBN: 978-1-943580-90-3

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Joint Frequency Comb Sensing III (Joint ES, FTS, Sensors) (JTu6E)

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D. I. Herman, F. R. Giorgetta, K. C. Cossel, N. A. Malarich, L. C. Hutcherson, C. Weerasekara, J. M. Cutshall, N. R. Newbury, S. M. Welch, B. D. DePaola, I. Coddington, E. A. Santos, and B. R. Washburn, "Broadband dual-comb spectroscopy for open-path field measurement of H216O and H218O," in OSA Optical Sensors and Sensing Congress 2021 (AIS, FTS, HISE, SENSORS, ES), S. Buckley, F. Vanier, S. Shi, K. Walker, I. Coddington, S. Paine, K. Lok Chan, W. Moses, S. Qian, P. Pellegrino, F. Vollmer, G. , J. Jágerská, R. Menzies, L. Emmenegger, and J. Westberg, eds., OSA Technical Digest (Optica Publishing Group, 2021), paper JTu6E.5.

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Abstract

Simultaneous retrieval of H₂¹⁶O and H₂¹⁸ concentrations at an agricultural site is demonstrated using near-infrared open-path dual-comb spectroscopy (DCS). Initial retrievals of the isotopologue ratio δ¹⁸O have a statistical precision of 5‰ at one hour. Work of the US Government and not subject to copyright.

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