https://doi.org/10.1140/epjp/s13360-025-06835-7
Regular Article
Temperature influence on interband and intraband optical transitions in pyramidal quantum dot
1
Institute of Applied Problems of Physics NAS RA, 25 Nersisyan St., 0014, Yerevan, Armenia
2
Institute of Chemical Physics after A.B. Nalbandyan of NAS RA, 5/2 P. Sevak St., 0014, Yerevan, Armenia
3
Department of Materials Science, University of Patras, Patras, Greece
4
Henan International Joint Laboratory of Quantum Dot Materials, Henan, China
5
Physical Chemistry and Physics Departments, University of Hamburg, Hamburg, Germany
6
Grupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
Received:
16
June
2025
Accepted:
6
September
2025
Published online:
23
September
2025
In this paper, a study of intraband and interband optical transitions in a pyramidal QD is presented. The energy spectrum and wave functions of the problem are calculated analytically within the framework of the adiabatic approximation. Based on the obtained results, the interband absorption is investigated, taking into account the temperature dependence of the band gap and the spectral broadening of the absorption lines. Then, the linear and nonlinear intraband absorption within the matrix density approach is calculated. The temperature and geometric dependencies of the generations of the second (for a three-level system) and third (for a four-level system) harmonics in the system under study are studied.
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 2025
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.
