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DTSTART;TZID="Pacific Time (US & Canada)":20180913T161000
DTEND;TZID="Pacific Time (US & Canada)":20180913T170000
SUMMARY:Colloquium: Physics & Astronomy – Dr. Ian Coddington
LOCATION:Webster Physical Science Building, Pullman, WA 99163
DESCRIPTION:The Department of Physics and Astronomy invites all to a colloquium featuring Dr. Ian Coddington, National Institute of Standards and technology. Dr. Coddington will present their talk, “Frequency Combs and Precision Measurement in the Real World.”\n\nMeet for refreshments before the lecture at 3:45 – 4:10 p.m. in the foyer on floor G above the lecture hall.\n\nAbstract: Frequency combs are a novel laser source that have historically been exploited in an exciting range of laboratory-bound precision measurements. This talk will discuss the development of a fieldable frequency combs and high precision field measurements with these devices focusing in particular on remote sensing. Using frequency combs in pairs we can create high-resolution broadband spectrometers that can see small changes in gas concentrations over kilometer paths. In the bear-IR this unique capability allows a host of new sensing modalities for detection and quantification of greenhouse gases. For instance methane leaks as small as 6 scfh (~1/4 the respiration rate of a human being) can be detected from over 1 kilometer away potentially allowing for simultaneous leak monitoring of hundreds of oil and has assets from a single spectrometer. Similarly, novel mid-IR frequency combs should allow for detection of more complex industrial pollutants in the open air. With the current rapid evolution of infrared technology this application space is will continue to expand.\n\nColloquium_Coddington 9.13.18
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