Optical properties of multilayer heterostructures based on zinc chalcogenides upon strong laser excitation |
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| Authors: | V. V. Stankevich M. V. Ermolenko O. V. Buganov S. A. Tikhomirov S. V. Gaponenko G. G. Yakushcheva P. I. Kuznetsov |
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| Affiliation: | (1) B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 prosp. Nezavisimosti, Minsk, 220072;(2) Institute of Radioelectronics, Russian Academy of Sciences, Fryazino, Moscow Oblast |
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| Abstract: | We have carried out an experimental study of the nonlinear optical properties of multilayer heterostructures based on zinc chalcogenides when excited by ultrashort laser pulses. We have observed a strong change in the optical properties of the samples over a broad spectral region for two-photon and one-photon excitation of the ZnSe sublattice. The fast relaxation time of the nonlinearity is ∼2–5 psec in both cases. We propose a physical model qualitatively explaining the observed effects. __________ Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 74, No. 6, pp. 805–809, November–December, 2007. |
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| Keywords: | multilayer heterostructures ultrafast processes electron-hole plasma |
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