Ian Coddington

Publications

Broadband dual-comb hyperspectral imaging and adaptable spectroscopy with programmable frequency combs

January 29, 2024

Author(s)

Fabrizio Giorgetta, Jean-Daniel deschenes, Richard L. LIEBER, Ian Coddington, Nathan Newbury, Esther Baumann

We explore the advantages of a free-form dual-comb spectroscopy (DCS) platform based on the time programmable frequency comb for real time penalty-free apodized

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

September 8, 2023

Author(s)

Daniel Herman, Griffin Mead, Fabrizio Giorgetta, Esther Baumann, Nathan Malarich, Brian Washburn, Nathan R. Newbury, Ian Coddington, Kevin Cossel

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

Dual-Comb Spectroscopy of Carbon Dioxide and Methane Across a 14.5 km Long Outdoor Path

September 1, 2023

Author(s)

Fabrizio Giorgetta, Esther Baumann, Brian Washburn, Nathan Malarich, Jean-Daniel Deschenes, Ian Coddington, Nathan Newbury, Kevin Cossel

Greenhouse-gas dual-comb spectroscopy is extended to a city-scale 14.5-km path length using remote receiver and data acquisition. This configuration enables

MODELLING AND REMOVING DIGITIZER NONLINEARITY FOR ACCURATE DUAL FREQUENCY COMB SPECTROSCOPY

August 15, 2023

Author(s)

Nathan Malarich, Kevin Cossel, JEAN-DANIEL DESCHENES, Fabrizio Giorgetta, Brian Washburn, Nathan Newbury, Ian Coddington, Jerome Genest

Operation of any dual-comb spectrometer requires digitization of the interference signal before further processing. Nonlinearities in the analog-to-digital

Removing Bias in Dual-Comb Spectroscopy from Pipeline Analog to Digital Converter Conversion

August 3, 2023

Author(s)

Nathan Malarich, Fabrizio Giorgetta, Kevin Cossel, Brian Washburn, Jerome Genest, Nathan Newbury, Ian Coddington

We quantify the percent-level bias in dual-comb spectroscopy due to nonlinearities from the analog-to-digital conversion and demonstrate a compensation method

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Patents (2018-Present)

Self-referencing Nonlinear Frequency Converting Photonic Waveguide and Self-referencing Nonlinear Frequency Conversion

NIST Inventors

Ian Coddington

The invention is an optical frequency comb sub-system that utilizes nano-scale photonic waveguides made of aluminum gallium arsenide (AlGaAs) to perform the nonlinear frequency conversion required to realize f-to-2f self-referencing. Thanks to the high optical nonlinearities, this task can be

Image of an map view with the text "Natural gas extraction east of Platteville Colorado. DCS could monitor over 100 sites from central location. Overlapping fields could ensure complete coverage".

Hub and Spoke System for Detecting and Locating Gas Leaks

NIST Inventors

Greg Rieker , Ian Coddington , Kuldeep Prasad and Anna Karion

A system for detecting gas leaks and determining their location and size. A data gathering portion of the system utilizes a hub and spoke configuration to collect path-integrated spectroscopic data over multiple open paths around an area. A processing portion of the system applies a high-resolution

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Ian Coddington (Fed)

Publications

Patents (2018-Present)