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arXiv · 1807.00697

Nonlinear light absorption in colloidal CdSe/CdS nanoplatelets

V. N. Mantsevich·D. S. Smirnov·A. M. Smirnov·A. D. Golinskaya·M. V. Kozlova·B. M. Saidjonov·V. S. Dneprovskii·R. B. Vasiliev
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Abstract

We investigated the nonlinear optical properties of CdSe/CdS nanoplatelets in the vicinity of heavy hole and light hole exciton resonances. The two color pump-probe technique was applied. The first intense pulse created non-equilibrium exciton population, which was detected as a decrease of probe light absorption. We observed intense scattering of excitons between heavy- and light-hole excitonic states. We also studied experimentally saturation of absorption in nanoplatelets. Theoretical description of these phenomena allowed us to determine parameters of exciton dynamics in nanoplatelets.

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V. N. Mantsevich, D. S. Smirnov, A. M. Smirnov, A. D. Golinskaya, M. V. Kozlova, B. M. Saidjonov, V. S. Dneprovskii, R. B. Vasiliev. 2018-07-02. Nonlinear light absorption in colloidal CdSe/CdS nanoplatelets. https://arxiv.org/abs/1807.00697

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