Heat-pulse propagation in polymers detected by selectively laser-excited dye molecules

Anti-Stokes sideband spectroscopy and phonon-induced changes of a spectral hole in the strongly inhomogeneously broadened transition of dye molecules in polymers have been applied to the study of heat-pulse propagation in thin polymer films with high time resolution. The measurements indicate a diff...

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Bibliographic Details
Published in:Solid state communications 1989, Vol.69 (1), p.73-77
Main Authors: Beck, K., Bogner, U., Maier, Max
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Lattice dynamics
Physics
Vibrational states in disordered systems
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Summary:Anti-Stokes sideband spectroscopy and phonon-induced changes of a spectral hole in the strongly inhomogeneously broadened transition of dye molecules in polymers have been applied to the study of heat-pulse propagation in thin polymer films with high time resolution. The measurements indicate a diffusive propagation and a Planck frequency distribution of the phonons in the polymer.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(89)90029-X