The thresholds for stimulated Raman scattering of the basic vibrations of pyridine in solutions with active solvents have been studied. Specifically, experiments were carried out with methyl, ethyl, and n-propyl alcohols; water, formic acid, acetic acid; and a neutral solvent, $ССl_4$. The complex formation due to hydrogen bonding strongly affects the threshold for stimulated Raman scattering of pyridine in the solutions. The concentration dependence of the threshold for the scattering lines with frequencies $ν_{1A}=998÷1007 сm^{-1}$ и $ν_2=1030 сm^{-1}$ has the characteristic minimum. These lines include emission from molecules in complexes.
Department of Optics
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