https://doi.org/10.1140/epjp/s13360-022-03207-3
Regular Article
The nonlinear optical rectification, second and third harmonic generation coefficients of Konwent potential quantum wells
1
Faculty of Engineering, Department of Nanotechnology Engineering, Sivas Cumhuriyet University, 58140, Sivas, Turkey
2
Unidad Académica de Física, Universidad Autónoma de Zacatecas, Calzada Solidaridad Esquina con Paseo La Bufa S/N, C.P. 98060, Zacatecas, Zac, Mexico
3
Facultad de Ciencias, Universidad Autónoma del Estado de Morelos, Ave. Universidad 1001, CP, 62209, Cuernavaca, Morelos, Mexico
4
Faculty of Science, Department of Physics, Sivas Cumhuriyet University, 58140, Sivas, Turkey
a
muhammedsayrac@cumhuriyet.edu.tr
Received:
20
January
2022
Accepted:
17
August
2022
Published online:
10
September
2022
We have theoretically investigated the effect of structure parameters and applied external fields on the Ga
Al
As/GaAs Konwent quantum well structure. Results of theoretical simulation have clarified the impact of applied external electric and magnetic fields, non-resonant intense laser field, as well as of the change in structure parameters, on the nonlinear optical rectification (NOR), second harmonic generation (SHG), and third harmonic generation (THG) in quantum wells with the Konwent potential. To evaluate these coefficients, we have solved the Schrödinger wave equation using the diagonalization method within the framework of the effective mass and single parabolic band approximations. Wave functions and the subband energy levels for the lowest bounded four states confined within the structure have been obtained. Then, NOR, SHG, and THG coefficient expression have been evaluated as functions of the incident photon energy. It is concluded that the appropriate choice of structure parameters and applied external fields could control the nonlinear optical properties of the Konwent potential quantum wells. The energy levels and the corresponding wavefunctions change with the applied external fields. The energy level change results in the shift of the peak position while the wavefunction change causes the variation in the dipole moment matrix elements, which affect the amplitude of the resonant peaks.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2022. Springer Nature or its licensor 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.
