https://doi.org/10.1140/epjp/s13360-023-03892-8
Regular Article
Pressure and temperature influences on the nonlinear optical rectification of an impurity in a symmetrical double quantum dot
1
Solid Physics Laboratory, Department of Physics, Faculty of Sciences Dhar El Mehraz, Sidi Mohamed Ben Abdellah University, B.P.1796, Atlas, Fez, Morocco
2
Faculty of Science and Technique, Sidi Mohammed Ben Abdellah University, B.P 2202, Route d’Imouzzer, Fez, Morocco
3
Centre Régional des Métiers de l’Education et de la Formation (CRMEF) de Fès, B. P. 49, Fès, Morocco
Received:
30
January
2023
Accepted:
12
March
2023
Published online:
29
March
2023
This work presented a study of nonlinear optical rectification (NOR) in a double quantum dot (DQD) made of 
under the influence of pressure (P) and temperature (T) in the presence of shallow donor impurities. Both the approximations of the parabolic band and effective mass, as well as the variational technique, were used as tools to calculate the electronic and optical properties of the donor impurity. The result revealed a redshift in the peak of the nonlinear optical rectification as the width of the DQD increases due to the reduction of the energy difference. The amplitude of the resonant peak of nonlinear optical rectification was tuned by changing the barrier width, depending on the location of the impurity. The findings also showed that the maximum value of NOR shifted to higher energies as the pressure increased. The temperature change caused a blueshift in the maximum peak of NOR for both impurity positions as well as a decrease in their amplitude. Under external perturbations P and T, the NOR varied more significantly for impurities located at the border of the DQD compared to those at the center position of the dot. This was due to the higher confinement effect induced by the external factors in this position.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
