Model of the interband nonlinear absorption in amorphous chalcogenides: Quasi-linear analytical solutions |
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Authors: | V Babin M Popescu M Ciobanu N D Nicolae C Talianu G Ciuciu |
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Affiliation: | (1) National Institute for Research and Development in Optoelectronics, Bucharest-Magurele, Romania;(2) National Institute for R&D of Materials Physics, P.O. Box MG. 7, Bucharest-Magurele, Romania |
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Abstract: | It is proposed a quasi-linear algorithm for the solving the kinetic equations system, which describes the excitation and relaxation
processes in the electronic and phononic subsystems of amorphous chalcogenides. The nonlinear interaction between an optical
field and an amorphous chalcogenide medium is analyzed. The nonlinear interaction between an excitation incident optical field
and the non-crystalline chalcogenide materials, evidences the specific nonlinear phenomena in amorphous semiconductors, which
have no correspondent in the case of crystalline semiconductors. The model is limited to phenomena occurring in chalcogenide
semiconductors, simultaneously with the optical field propagation, by neglecting the excitation phenomena. |
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