Gas concentration measurement instrument based on the effects of a wave-mixing interference on stimulated emissions
Abstract
A method and apparatus for measuring partial pressures of gaseous components within a mixture. The apparatus comprises generally at least one tunable laser source, a beam splitter, mirrors, optical filter, an optical spectrometer, and a data recorder. Measured in the forward direction along the path of the laser, the intensity of the emission spectra of the gaseous component, at wavelengths characteristic of the gas component being measured, are suppressed. Measured in the backward direction, the peak intensities characteristic of a given gaseous component will be wavelength shifted. These effects on peak intensity wavelengths are linearly dependent on the partial pressure of the compound being measured, but independent of the partial pressures of other gases which are present within the sample. The method and apparatus allow for efficient measurement of gaseous components.
- Inventors:
-
- Oak Ridge, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 871226
- Patent Number(s):
- 5686988
- Assignee:
- Lockheed Martin Energy Systems, Inc. (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- gas; concentration; measurement; instrument; based; effects; wave-mixing; interference; stimulated; emissions; method; apparatus; measuring; partial; pressures; gaseous; components; mixture; comprises; tunable; laser; source; beam; splitter; mirrors; optical; filter; spectrometer; data; recorder; measured; forward; direction; path; intensity; emission; spectra; component; wavelengths; characteristic; suppressed; backward; peak; intensities; wavelength; shifted; linearly; dependent; pressure; compound; independent; gases; sample; allow; efficient; optical spectrometer; gaseous components; data recorder; optical filter; beam splitter; apparatus comprises; partial pressure; laser source; gas concentration; stimulated emission; partial pressures; tunable laser; apparatus comprise; measurement instrument; peak intensity; concentration measurement; gas component; forward direction; emission spectra; gaseous component; /356/250/
Citation Formats
Garrett, W Ray. Gas concentration measurement instrument based on the effects of a wave-mixing interference on stimulated emissions. United States: N. p., 1997.
Web.
Garrett, W Ray. Gas concentration measurement instrument based on the effects of a wave-mixing interference on stimulated emissions. United States.
Garrett, W Ray. Wed .
"Gas concentration measurement instrument based on the effects of a wave-mixing interference on stimulated emissions". United States. https://www.osti.gov/servlets/purl/871226.
@article{osti_871226,
title = {Gas concentration measurement instrument based on the effects of a wave-mixing interference on stimulated emissions},
author = {Garrett, W Ray},
abstractNote = {A method and apparatus for measuring partial pressures of gaseous components within a mixture. The apparatus comprises generally at least one tunable laser source, a beam splitter, mirrors, optical filter, an optical spectrometer, and a data recorder. Measured in the forward direction along the path of the laser, the intensity of the emission spectra of the gaseous component, at wavelengths characteristic of the gas component being measured, are suppressed. Measured in the backward direction, the peak intensities characteristic of a given gaseous component will be wavelength shifted. These effects on peak intensity wavelengths are linearly dependent on the partial pressure of the compound being measured, but independent of the partial pressures of other gases which are present within the sample. The method and apparatus allow for efficient measurement of gaseous components.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1997},
month = {Wed Jan 01 00:00:00 EST 1997}
}
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Works referenced in this record:
Forward gain suppression of optically pumped stimulated emissions due to self-induced wave-mixing interference during a pump pulse
journal, June 1993
- Garrett, W. R.
- Physical Review Letters, Vol. 70, Issue 26
Large multiple collective line shifts observed in three-photon excitations of Xe
journal, April 1990
- Garrett, W. R.; Hart, Roger C.; Wray, James E.
- Physical Review Letters, Vol. 64, Issue 15