Title :
Sensitive gas detection in the atmosphere with new type of photoacoustic Raman and coherent anti-Stokes Raman spectroscopy
Author :
Yuji, O. ; Mitsuo, M. ; Yoshiteru, A.
Author_Institution :
Graduate Sch. of Inf. Sci. & Electr. Eng., Kyushu Univ., Fukuoka, Japan
Abstract :
Summary form only given. We have proposed and demonstrated a new scheme for PARS and CARS, by replacing a tunable laser with a Raman shifter. Detection limit of ppm order can be attained for H/sub 2/ or CH/sub 4/ in the atmosphere. Because the construction is very simple, these techniques are useful for continuous monitoring of atmospheric species.
Keywords :
Raman spectroscopy; air pollution measurement; coherent antiStokes Raman scattering; gas sensors; photoacoustic spectroscopy; spectrochemical analysis; Raman shifter; atmospheric species; calibration curves; coherent anti-Stokes Raman spectroscopy; continuous monitoring; greenhouse gases; methane; photoacoustic Raman spectroscopy; sensitive gas detection; simple construction; tunable laser replacement; Absorption; Atmosphere; Atmospheric measurements; Atmospheric waves; Frequency; Gas lasers; Length measurement; Raman scattering; Spectroscopy; Wavelength measurement;
Conference_Titel :
Lasers and Electro-Optics, 1998. CLEO 98. Technical Digest. Summaries of papers presented at the Conference on
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
1-55752-339-0
DOI :
10.1109/CLEO.1998.675913
