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RESEARCH PRODUCT
Enhancement of sensitivity in high-resolution stimulated Raman spectroscopy of gases: Applicaion to the 2ν2 (1285 cm−1) band of CO2
Hubert BergerBruno LavorelGuy MillotC. WengerR. Saint-loupsubject
chemistry.chemical_classificationChemistryTriatomic moleculeAnalytical chemistryQuantum numberMolecular physicssymbols.namesakeTorrsymbolsGeneral Materials ScienceCoherent anti-Stokes Raman spectroscopyRaman spectroscopySpectroscopyInorganic compoundSpectroscopyRaman scatteringdescription
The application of a multiple-pass gas cell to quasi-cw stimulated Raman scattering is demonstrated to be a powerful method for significantly increasing the sensitivity. As a consequence, such a device offers the possibility of working in the 0.1–1 Torr pressure range for weak bands. As a striking example, experimental results are given for the 2ν2 band of CO2 at 1285 cm−1. The band is almost completely resolved with a very good signal-to-noise ratio. The Raman frequencies and the collisional broadening coefficients are determined as a function of quantum number J. Moreover, the possibility of auto-stimulated Raman effect on CO2 at moderate pressure via the sharp ν1 band (1388 cm−1) is demonstrated. The first Stokes signal has been measured with a very narrow line width.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1990-02-01 | Journal of Raman Spectroscopy |