The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 12, 2002
Filed:
Jul. 30, 1999
Applicant:
Inventors:
Joel A. Silver, Santa Fe, NM (US);
David S. Bomse, Santa Fe, NM (US);
Assignee:
Southwest Sciences Incorporated, Santa Fe, NM (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 2/161 ;
U.S. Cl.
CPC ...
G01N 2/161 ;
Abstract
A method and apparatus for demodulating a plurality of frequency components output from a photodetector in a wavelength modulation spectroscopy system and determining absorption line shapes from the demodulated data. Demodulation is performed with a homodyne demodulator. Line center magnitudes of selected even harmonics of the demodulated output frequency components are measured and the absorption line shape is calculated from the relationship between these magnitudes.