We analyze the effect of parametric coupling of different frequency components on the stimulated Raman scattering threshold depending on the four-wave mixing phase mismatch and material dispersion. A fundamental difference is observed in the way parametric processes affect the generation of Stokes and anti-Stokes waves. We show that as a result of parametric coupling of Stokes components, their generation thresholds strongly decrease and come closer to each other because they originate from an intense parametric rather than a spontaneous seed radiation. The theoretical analysis refines and extends the commonly accepted concept of stimulated Raman scattering in nonlinear crystals and demonstrates good agreement with new experimental data.

PACS: 42.55.Ye, 42.65.Dr, 42.65.Ky, 42.70.Mp, 42.79.Nv (all) DOI: 10.3367/UFNe.0180.201006f.0639 URL: https://ufn.ru/en/articles/2010/6/e/ 000281644500005 2-s2.0-77958598054 2010PhyU...53..611B Citation: Basiev T T, Smetanin S N, Shurygin A S, Fedin A V "Parametric coupling of frequency components at stimulated Raman scattering in solids" Phys. Usp. 53 611–617 (2010) BibTexBibNote ® (generic)BibNote ® (RIS)MedlineRefWorks Оригинал: Басиев Т Т, Сметанин С Н, Шурыгин А С, Федин А В «Параметрическая связь частотных компонент излучения при вынужденном комбинационном рассеянии в твёрдом теле» УФН 180 639–646 (2010); DOI: 10.3367/UFNr.0180.201006f.0639