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Dual modulation laser line-locking technique for wavelength modulation spectroscopy

United States Patent

February 26, 2002
View the Complete Patent at the US Patent & Trademark Office
Disclosed are a method and apparatus for dual modulation of an optical spectroscopy laser. Demodulation is accomplished in a manner resulting in measurement of absorbance of a gas species, as well as stabilization of laser wavelength and baseline noise reduction.
Bomse; David S. (Santa Fe, NM), Hovde; D. Christian (Santa Fe, NM), Silver; Joel A. (Santa Fe, NM)
Southwest Sciences Incorporated (Santa Fe, NM)
08/ 347,814
November 30, 1994
GOVERNMENT RIGHTS This invention was made with U.S. Government support under Contract DE-FG03-90ER81053 awarded by the Department of Energy. The Government has certain rights in this invention.