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Temperature Dependence of the Resonant and Nonresonant CARS Signals

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We have studied the temperature dependence of resonant and nonresonant CARS signals in benzene, in toluene, and in n-alcohol mixtures. A cryostat was constructed to allow cooling of flowing liquids. In nonpolar solvents, the nonresonant background signal does not seem to depend on temperature, while in n-alcohol mixtures an enhancement of the nonlinear CARS signal is observed. Lowering temperature in these solutions enhances detectability of weak impurity lines in the resonant CARS spectrum.

Keywords: Raman spectroscopy; Spectroscopic techniques

Document Type: Research Article


Affiliations: 1: Institute of Physics, Estonian Academy of Sciences, Riia 142, 202400 Tartu, Estonian SSR, USSR 2: Department of Chemistry, University of Jyväskylä, Kyllikinkatu 1-3, SF-40100 Jyväskylä, Finland

Publication date: September 1, 1990

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