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

Roscioli, Joseph R.

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

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

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

Language

En

Permalink

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

Copyright and License Information

Copyright 2016 by the authors

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