University of Illinois Urbana-Champaign

Applications of high resolution mid-infrared spectroscopy for atmospheric and environmental measurements

Roscioli, Joseph R.

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2019.pdf
740973.pptx

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https://hdl.handle.net/2142/91421

Description

Title
Applications of high resolution mid-infrared spectroscopy for atmospheric and environmental measurements
Author(s)
Roscioli, Joseph R.
Contributor(s)
  • Kolb, Charles E.
  • Dyroff, Christoph
  • Jervis, Dylan
  • Yacovitch, Tara I.
  • Shorter, Joanne
  • Herndon, Scott C.
  • Zahniser, Mark
  • Nelson, David
  • McManus, J. Barry
Issue Date
2016-06-21
Keyword(s)
Spectroscopy in Atmospheric Chemistry
Date of Ingest
2017-01-26T21:37:04Z
Abstract
For the past 20 years, high resolution infrared spectroscopy has served as a valuable tool to measure gas-phase concentrations of ambient gas samples. We review recent advances in atmospheric sampling using direct absorption high resolution mid-infrared spectroscopy from the perspective of light sources, detectors, and optical designs. Developments in diode, quantum cascade and interband cascade laser technology have led to thermoelectrically-cooled single-mode laser sources capable of operation between 800 \wn and 3100 \wn, with \textless10 MHz resolution and \textgreater10 mW power. Advances in detector and preamplifier technology have yielded thermoelectriocally-cooled sensors capable of room-temperature operation with extremely high detectivities. Finally, novel spectrometer optical designs have led to robust multipass absorption cells capable of \textgreater400 m effective pathlength in a compact package. In combination with accurate spectroscopic databases, these developments have afforded dramatic improvements in measurement sensitivity, accuracy, precision, and selectivity. We will present several examples of the applications of high resolution mid-IR spectrometers in real-world field measurements at sampling towers and aboard mobile platforms such as vehicles and airplanes.
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
text
Genre of Resource
Conference Paper / Presentation
Language
En
Permalink
http://hdl.handle.net/2142/91421
Copyright and License Information
Copyright 2016 by the authors

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Abstracts & Presentations - 2016 International Symposium on Molecular Spectroscopy PRIMARY