V. Babin, M.Popescu, M.Ciobanu, D. Nicolae, C. Talianu, J. Ciuciu, Model of the interband nonlinear absorbtion in amorphous chalcogenides: quasilinear analytical solutions, Journal of Material Sciences: Materials and Electronics, 17/4 (2006) 307-314

Title: Model of the interband nonlinear absorbtion in amorphous chalcogenides: quasilinear analytical solutions

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.

 Key words: chalcogenide, nonlinear, semiconductor