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Title: Stimulated Raman scattering of laser dye mixtures dissolved in multiple scattering media

Stimulated Raman scattering (SRS) of a mixture of rhodamine 6G and pyrromethene 605 laser dyes in vesicular films is studied. It is shown that a peculiar interaction of dyes occurs under conditions of multiple scattering of light from vesicles. This interaction manifests itself as SRS excitation of one of the dyes by random lasing of the other dye, provided that the random lasing spectrum overlaps the Stokes lines of the first dye. In addition, there is energy transfer between molecules of these dyes if their luminescence and absorption spectra overlap. The results obtained confirm that the mechanism of SRS from laser dyes in multiple scattering media is similar to that in coherent-active Raman spectroscopy. These results extend the possibility of determining the vibrational spectrum of dye molecules from their secondary radiation in these media. (nonlinear optical phenomena)
Authors:
;  [1] ;  [2] ;  [3]
  1. Department of Physics, T.G. Shevchenko Kiev National University, Kiev (Ukraine)
  2. Institute of Physics, National Academy of Sciences of Ukraine, Kiev (Ukraine)
  3. Department of Chemistry, T.G. Shevchenko Kiev National University, Kiev (Ukraine)
Publication Date:
OSTI Identifier:
22373351
Resource Type:
Journal Article
Resource Relation:
Journal Name: Quantum Electronics (Woodbury, N.Y.); Journal Volume: 44; Journal Issue: 10; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ABSORPTION SPECTRA; DYES; ENERGY TRANSFER; FILMS; LUMINESCENCE; MIXTURES; MULTIPLE SCATTERING; RAMAN EFFECT; RAMAN SPECTROSCOPY; SOLID STATE LASERS