Abstract:
The nonlinear absorption in GaSe crystals at high optical excitation levels is experimentally studied. A Nd:YAG laser (first and second harmonics, 1064 and 532 nm) and a liquid laser (tuning range 594–643 nm) were used as excitation sources. It is shown that the features observed in the exciton resonance region of the absorption, luminescence, and photoconductivity spectra of GaSe crystals at high optical excitation levels can be explained by exciton–exciton interaction and Coulomb interaction screening by free carriers.
This work was financially supported by the Science Development Foundation under the President of the Republic of Azerbaijan (grant no. E.F/MQM/Elm-Tehsil-1-2016-1(26)-71/01/1).
Citation:
V. M. Salmanov, A. H. Huseynov, R. M. Mamedov, A. A. Salmanova, N. D. Dashdamirova, “Nonlinear optical absorption in GaSe under laser excitation”, Optics and Spectroscopy, 128:4 (2020), 513–516; Optics and Spectroscopy, 128:4 (2020), 501–504
This publication is cited in the following 2 articles:
V. M. Salmanov, A. G. Guseinov, M. A. Dzhafarov, R. M. Mamedov, F. Sh. Akhmedova, T. A. Mamedova, “Preparation of Gallium Selenide Nanoparticles by Laser Ablation in Liquid”, Russ. J. Phys. Chem., 2024
V. M. Salmanov, A. G. Guseinov, M. A. Dzhafarov, R. M. Mamedov, F. Sh. Akhmedova, T. A. Mamedova, “Poluchenie nanochastits selenida galliya metodom lazernoi ablyatsii v zhidkosti”, Russian Journal of Physical Chemistry, 98:3 (2024)