The second and third harmonic generation of GaAs/Ga1-xAlxAs spherical quantum dots under a confining potential

The objective of this study is to theoretically discuss the impact of additional tuning factors on the second and third harmonic generation (SHG and THG) of GaAs/Ga 1 - x Al x As quantum dots (QDs) with the inversely quadratic Hellmann–Kratzer (IQHK) potential by adjusting the depth of potential and...

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Bibliographic Details
Published inThe European physical journal. B, Condensed matter physics Vol. 95; no. 5
Main Authors Duan, Yiming, Li, Xuechao
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 2022
Springer Nature B.V
Subjects
Complex Systems
Condensed Matter Physics
Energy levels
Fluid- and Aerodynamics
Gallium arsenide
Harmonic generations
Iterative methods
Mathematical analysis
Physics
Physics and Astronomy
Quantum dots
Regular Article - Mesoscopic and Nanoscale Systems
Schrodinger equation
Solid State Physics
Tuning
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Summary:The objective of this study is to theoretically discuss the impact of additional tuning factors on the second and third harmonic generation (SHG and THG) of GaAs/Ga 1 - x Al x As quantum dots (QDs) with the inversely quadratic Hellmann–Kratzer (IQHK) potential by adjusting the depth of potential and radius of the QDs. Within the formula method, the energy levels and the corresponding wave-functions are calculated by solving the Schrödinger equation. Then, the SHG and THG coefficients are deduced using the density matrix formalism with an iterative procedure. Finally, the results indicate that the additional tuning factors and structural parameters have significant effects on the peak positions and magnitudes of the calculated SHG and THG coefficients. Graphic abstract
ISSN:1434-6028
1434-6036
DOI:10.1140/epjb/s10051-022-00348-3