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Environmental Science and Engineering Seminar

Wednesday, April 10, 2019
4:00pm to 5:00pm
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South Mudd 365
Dual-Comb Spectroscopy for Open-Path Atmospheric Gas Measurements
Nathan Newbury, National Institute of Standards & Technology,

Dual-comb spectroscopy takes advantage of the broad bandwidth and high frequency resolution of frequency combs for precision spectroscopy. We have been developing open-path dual-comb spectroscopy and investigating its application to atmospheric spectroscopy. We currently have dual-comb spectrometers in both the near-infrared, near 1.6 micrometers, and the mid-infrared, near 3 micrometers. These systems are being explored for applications in regional carbon monitoring, oil/gas field monitoring, and spatial scanning for plume detection (via a retroreflector mounted on a small quadcopter).  I will describe the technique of dual-comb spectroscopy and summarize some of our recent trial experiments. 

For more information, please contact Bronagh Glaser by phone at 626-395-8732 or by email at [email protected].