Laser photoacoustic measurement of infrared spectral line profiles

Author

Yamakawa, S. ; Sokabe, N.

Author_Institution

Dept. of Appl. Phys., Osaka City Univ., Japan

Volume

4

fYear

1999

fDate

Aug. 30 1999-Sept. 3 1999

Firstpage

1196

Abstract

Spectral line profiles of thirteen infrared transitions of normal methanol and ethylene have been measured with the CO/sub 2/ laser photoacoustic detection technique. Pressure broadening, pressure shifts and offsets from the CO/sub 2/ line centers are reported. The theoretical description of the photoacoustic line profile and the method of obtaining undistorted line profiles are presented along with the possible application of the constructed system to trace gas detection.

Keywords

infrared spectra; infrared spectroscopy; organic compounds; photoacoustic spectra; photoacoustic spectroscopy; spectral line breadth; spectral line broadening; spectral line shift; spectrochemical analysis; CO/sub 2/; CO/sub 2/ laser; CO/sub 2/ line centers; ethylene; infrared spectral line profiles; infrared transitions; laser photoacoustic measurement; methanol; photoacoustic detection technique; photoacoustic line profile; pressure broadening; pressure offsets; pressure shifts; spectral line profiles; theoretical description; trace gas detection; undistorted line profiles; Absorption; Gas detectors; Gas lasers; Infrared detectors; Infrared spectra; Laser transitions; Optical pumping; Optical saturation; Pump lasers; Waveguide lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 1999. CLEO/Pacific Rim '99. The Pacific Rim Conference on

Conference_Location

Seoul, South Korea

Print_ISBN

0-7803-5661-6

Type

conf

DOI

10.1109/CLEOPR.1999.814732

Filename

814732