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dc.contributor.advisor Tittel, Frank K.
dc.creatorMine, Yasuharu
dc.date.accessioned 2009-06-04T08:34:17Z
dc.date.available 2009-06-04T08:34:17Z
dc.date.issued 1997
dc.identifier.urihttp://hdl.handle.net/1911/17110
dc.description.abstract Real-time, compact, laser absorption-based sensors for trace gas detection have been developed. Difference-frequency generation in a periodically poled lithium niobate (PPLN) crystal pumped by two compact lasers, a near-infrared diode laser and a monolithic ring Nd:YAG laser, is used as a mid-infrared laser source. Detection of carbon monoxide (CO) and formaldehyde $\rm (H\sb2CO)$ in ppm to sub-ppm level has been performed, based on a direct absorption spectroscopy. The portable sensor designed for monitoring the CO concentration in ambient air was built and operated in the laboratory, in the open air, and a test chamber located at the NASA Johnson Space Center.
dc.format.extent 72 p.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectElectronics
Electrical engineering
Optics
Environmental science
dc.title Mid-infrared laser absorption-based sensors for trace gas detection using difference-frequency generation
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Physics
thesis.degree.discipline Natural Sciences
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Science


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