Cooperative processes in glasses

Enaki, N. A.; Koroli, V. I.
June 2000
AIP Conference Proceedings;2000, Vol. 519 Issue 1, p217
Academic Journal
We studied the cooperative generation of non-equilibrium localized phonons (fractons), which can be observed in experimental studying of the re laxation of groups of excited atoms after the passage of short laser pulse through the glass sample. The increasing of the absorption coefficient in the process of the excitation of glasses by short laser pulse with relatively small power is conditioned by the generation of the non-equilibriurn coherent localized phonons in the process of the relaxation of non-equilibrium excitations, which strongly change the topology of the random potential and, thus, open a new channel of the interband light absorption.


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