Abstract
The revealed absorption saturation and Fresnel diffraction of ultrashort laser pulses under resonant excitation of the basic exciton transition in CdSe/ZnS quantum dots (a strongly absorbing colloidal solution) have been explained by the processes of filling of states of a two-level system with the excited-state lifetime dependent on the light intensity and self-diffraction of the laser beam due to the formation of the transparency channel and the induced diaphragm.
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Original Russian Text © V.S. Dneprovskiĭ, E.A. Zhukov, M.V. Kozlova, T.Wumaier, Dau Sy Hieu, M.V. Artem’ev, 2010, published in Fizika Tverdogo Tela, 2010, Vol. 52, No. 9, pp. 1809–1814.
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Dneprovskiĭ, V.S., Zhukov, E.A., Kozlova, M.V. et al. Absorption saturation and self-action processes under resonant excitation of the basic exciton transition in CdSe/ZnS colloidal quantum dots. Phys. Solid State 52, 1941–1946 (2010). https://doi.org/10.1134/S106378341009026X
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DOI: https://doi.org/10.1134/S106378341009026X