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Journal article
Application of quantum cascade lasers to high-precision atmospheric trace gas measurements
Optical engineering, v 49(11), pp 111124-111124
01 Nov 2010
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We review our recent results in development of high-precision laser spectroscopic instrumentation using midinfrared quantum cascade lasers (QCLs). Some of these instruments have been directed at measurements of atmospheric trace gases where a fractional precision of 10(-3) or better of ambient concentration may be required. Such high precision is needed in measurements of fluxes of stable atmospheric gases and measurements of isotopic ratios. Instruments that are based on thermoelectrically cooled midinfrared QCLs and thermoelectrically cooled detectors have been demonstrated that meet the requirements of high-precision atmospheric measurements, without the need for cryogens. We also describe the design of and results from a new dual QCL instrument with a 200-m path-length absorption cell. This instrument has demonstrated 1-s noise of 32 ppt for formaldehyde (HCHO) and 9 ppt for carbonyl sulfide (OCS). (C) 2010 Society of Photo-Optical Instrumentation Engineers. [DOI: 10.1117/1.3498782]
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Details
- Title
- Application of quantum cascade lasers to high-precision atmospheric trace gas measurements
- Creators
- J. Barry McManus - Aerodyne ResearchMark S. Zahniser - Aerodyne ResearchDavid D. Nelson - Aerodyne ResearchJoanne H. Shorter - Aerodyne ResearchScott Herndon - Aerodyne ResearchEzra Wood - Aerodyne ResearchRick Wehr - University of Arizona
- Publication Details
- Optical engineering, v 49(11), pp 111124-111124
- Publisher
- Spie-Soc Photo-Optical Instrumentation Engineers
- Number of pages
- 11
- Grant note
- Department of Agriculture Department of Energy; United States Department of Energy (DOE) Department of Commerce National Science Foundation; National Science Foundation (NSF) Environmental Protection Agency
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemistry
- Web of Science ID
- WOS:000284996200027
- Scopus ID
- 2-s2.0-79953865339
- Other Identifier
- 991020902865804721
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- Collaboration types
- Industry collaboration
- Domestic collaboration
- Web of Science research areas
- Optics