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| Title: | ULTRAFAST REFLECTIVITY DYNAMICS IN A MULTILAYER NANOSTRUCTURES BASED ON ZINC CHALCOGENIDES | |
| DOI No: | 10.1142/9789812701947_0011 | |
| Source: | PHYSICS, CHEMISTRY AND APPLICATION OF NANOSTRUCTURES (pp 70-73) | |
| Author(s): | M. V. ERMOLENKO
Institute of Molecular and Atomic Physics, National Academy of Sciences, 70 Fr.Scaryna Ave., 220072 Minsk, Belarus V. V. STANKEVICH Institute of Molecular and Atomic Physics, National Academy of Sciences, 70 Fr.Scaryna Ave., 220072 Minsk, Belarus O. V. BUGANOV Institute of Molecular and Atomic Physics, National Academy of Sciences, 70 Fr.Scaryna Ave., 220072 Minsk, Belarus S. A. TIKHOMIROV Institute of Molecular and Atomic Physics, National Academy of Sciences, 70 Fr.Scaryna Ave., 220072 Minsk, Belarus S. V. GAPONENKO Institute of Molecular and Atomic Physics, National Academy of Sciences, 70 Fr.Scaryna Ave., 220072 Minsk, Belarus |
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| Abstract: | We investigate ultrafast nonlinear optical properties of periodic structures based on ZnSe/ZnS using interband and two-photon excitation of ZnSe sublattice by ultrashort laser pulses. A considerable shift of reflection spectrum and large relative reflection changes were observed in a wide spectral range corresponding to the transparency region of ZnSe far from the intrinsic absorption onset. Large relative reflection changes were observed in a wide spectral range. The nonlinear refraction is supposed to be controlled by population induced absorption changes in ZnSe. The relaxation time is controlled by a transition from non-equilibrium to quasi-equilibrium distribution of electrons and holes. | |
| Full Text: | View full text in PDF format (234KB) | |
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