https://doi.org/10.1140/epjp/s13360-024-05715-w
Regular Article
Coupled cylindrical quantum well wires in broken symmetry: effects of intense laser field on the harmonic generations
1
Department of Electronics and Automation, Sivas Cumhuriyet University, 58140, Sivas, Turkey
2
Department of Nanotechnology Engineering, Sivas Cumhuriyet University, 58140, Sivas, Turkey
3
Department of Electricity and Energy, Sivas Cumhuriyet University, 58140, Sivas, Turkey
4
Department of Physics, Sivas Cumhuriyet University, 58140, Sivas, Turkey
5
Nanophotonics Application and Research Center, Sivas Cumhuriyet University, Sivas, Turkey
Received:
12
June
2024
Accepted:
3
October
2024
Published online:
21
October
2024
This study explores the high harmonic generations in GaAs/AlxGa1-xAs asymmetric coupled cylindrical quantum well wires (CCQWWs) under varying intense laser fields (ILFs). The structural parameters and theoretical framework are detailed, including the Schrödinger equation for the CCQWW heterojunction and the Floquet method to model ILF effects. Numerical simulations reveal alterations in the confinement potential and energy states of CCQWWs with increasing ILF intensity. Notably, significant changes occur in the potential well shape, influencing the localization of energy states. Transition energies and dipole moment matrix elements are analyzed, highlighting shifts in resonance peaks and their intensities. The study identifies blue-shift points at α0 (ILF parameter) values of 4.4 nm, 4.7 nm, and 3.7 nm for transition energies E21, E31/2, and E41/3, respectively, followed by red-shift trends as α0 increases further. Maximum enhancements are observed in the second harmonic generation coefficient at ILF α0 = 6 nm and the third harmonic generation coefficient at α0 = 8 nm, which is 1000 times higher than at α0 = 0 nm. These findings underscore the potential for enhancing semiconductor device production through optimized ILF induced high harmonic generation.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. 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.
