Effect of the aluminum concentration on the second harmonic generation in a quantum dot of AsGa/AsGa1−xAlx

The effect of aluminum concentration on the second harmonic generation (SHG) in a cylindrical quantum dot (CQD) is studied theoretically, using the density matrix formalism and a perturbative procedure. The energy levels and wave functions of an electron in the CQD were obtained by solving the ti...

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Bibliographic Details
Main Authors:	Montes Macea, Alexander Jose, Cano, L.E., Portacio , Alfonso
Format:	Online
Language:	spa
Published:	Universidad Pedagógica y Tecnológica de Colombia 2022
Subjects:	Punto cuántico cilíndrico, generación de segundo armónico. Cylindrical quantum dot, Second harmonic generation.
Online Access:	https://revistas.uptc.edu.co/index.php/ciencia_en_desarrollo/article/view/13324

Description
Summary:	The effect of aluminum concentration on the second harmonic generation (SHG) in a cylindrical quantum dot (CQD) is studied theoretically, using the density matrix formalism and a perturbative procedure. The energy levels and wave functions of an electron in the CQD were obtained by solving the time-independent Schrödinger equation in the framework of the effective mass approximation. Numerical calculations are performed for a CQD of GaAs/Al1−xGaxAs. It was found that the increase in the aluminum concentration produces a decrease in the intensity of the SHG and a blue shift in the resonant peaks of the optical res- ponse of the object of study.