Understanding photodetection nonlinearity in dual-comb interferometry

Guay, Philippe; Tourigny-Plante, Alex; Michaud-Belleau, Vincent; Hébert, Nicolas Bourbeau; Gouin, A.; Genest, Jérôme

doi:10.1364/osac.435015

Cited by 12 publications

(2 citation statements)

References 15 publications

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“…4.2 . In this section, we review the main potential sources of error in the open-path DCS measurement: detection and digitization nonlinearities ( Guay et al, 2021 ; Malarich et al, 2022 ), concentration retrieval algorithm bias, and spectral model error. To limit the effect of detection and digitization nonlinearities, the received power was limited to < 30 μW and high-linearity amplifiers were used.…”

Section: Discussionmentioning

confidence: 99%

Open-path measurement of stable water isotopologues using mid-infrared dual-comb spectroscopy

Herman,

Mead,

Giorgetta

et al. 2023

Atmos. Meas. Tech.

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Abstract. We present an open-path mid-infrared dual-comb spectroscopy (DCS) system capable of precise measurement of the stable water isotopologues H216O and HD16O. This system ran in a remote configuration at a rural test site for 3.75 months with 60 % uptime and achieved a precision of < 2 ‰ on the normalized ratio of H216O and HD16O (δD) in 1000 s. Here, we compare the δD values from the DCS system to those from the National Ecological Observatory Network (NEON) isotopologue point sensor network. Over the multi-month campaign, the mean difference between the DCS δD values and the NEON δD values from a similar ecosystem is < 2 ‰ with a standard deviation of 18 ‰, which demonstrates the inherent accuracy of DCS measurements over a variety of atmospheric conditions. We observe time-varying diurnal profiles and seasonal trends that are mostly correlated between the sites on daily timescales. This observation motivates the development of denser ecological monitoring networks aimed at understanding regional- and synoptic-scale water transport. Precise and accurate open-path measurements using DCS provide new capabilities for such networks.

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Section: Discussionmentioning

confidence: 99%

Open-path measurement of stable water isotopologues using mid-infrared dual-comb spectroscopy

Herman,

Mead,

Giorgetta

et al. 2023

Atmos. Meas. Tech.

View full text Add to dashboard Cite

show abstract

“…In this section, we review the main potential sources of error in the open-path DCS measurement: detection and digitization nonlinearities (Guay et al, 2021;Malarich et al, 2022), concentration retrieval algorithm bias, and spectral model error. To limit the effect of detection and digitization nonlinearities, the received power was limited to <30 μW and high-linearity amplifiers were used.…”

Section: Sources Of Error In Open-path Isotopologue Sensing With Dcsmentioning

confidence: 99%

Open-path measurement of stable water isotopologues using mid-infrared dual-comb spectroscopy

Herman

Mead²,

Giorgetta³

et al. 2023

Preprint

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Abstract. We present an open-path mid-infrared dual-comb spectrometer (DCS) capable of precise measurement of the stable water isotopologues H216O and HD16O. This system ran in a remote configuration at a rural test site for 3.75 months with 60 % uptime and achieved a precision of <2 ‰ on the normalized ratio of H216O and HD16O (δD) in 1000 seconds. Here, we compare the δD values from the DCS to those from the National Ecological Observatory Network (NEON) isotopologue point sensor network. Over the multi-month campaign, the mean difference between the DCS δD values and the NEON δD values from a similar ecosystem is <2 ‰ with a standard deviation of 18 ‰, which demonstrates the inherent accuracy of DCS measurements over a variety of atmospheric conditions. We observe time-varying diurnal profiles and seasonal trends that are mostly correlated between the sites on daily time scales. This observation motivates the development of denser ecological monitoring networks aimed at understanding regional and synoptic scale water transport. Precise and accurate open-path measurements using DCS provide new capabilities for such networks.

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High-temperature absorption line shape parameters for CO2 in the 6800–7000 cm-1 region from dual frequency comb measurements up to 1000 K

Cole

Hoghooghi

Drouin

et al. 2021

Journal of Quantitative Spectroscopy and Radiative Transfer

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Understanding photodetection nonlinearity in dual-comb interferometry

Cited by 12 publications

References 15 publications

Open-path measurement of stable water isotopologues using mid-infrared dual-comb spectroscopy

Open-path measurement of stable water isotopologues using mid-infrared dual-comb spectroscopy

Open-path measurement of stable water isotopologues using mid-infrared dual-comb spectroscopy

High-temperature absorption line shape parameters for CO2 in the 6800–7000 cm-1 region from dual frequency comb measurements up to 1000 K

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