Second-Harmonic and Third-Harmonic Generation in Nanostructures with Asymmetric Confinement Potential: The Role of Two-level Atom Approximation

  • D. Causil Facultad de Ciencias Básicas, Ingeniería y Arquitectura, Corporación Universitaria del Caribe, Sincelejo, 700001 Sucre, Colombia
  • M. Urango-Baquero Instituto de Ciencias Ambientales de la Orinoquia Colombiana-ICAOC, Universidad de los Llanos, 500001 Villavicencio, Colombia
  • A. A. Portacio Facultad de Ciencias Básicas e Ingeniería, Universidad de los Llanos, 500001 Villavicencio, Colombia http://orcid.org/0000-0002-5495-7102

Abstract

The second harmonic generation (SHG) and third harmonic generation (THG) into a cylindrical quantum dot (CQD) with asymmetric confinement potential is studied theoretically within the framework the two-level atom approximation, by using the matrix density formalism. The energy levels and waves functions of an electron into CQD they were obtained by solving the time-independent Schrödinger equation. The numerical calculations make for a CQD of GaAs/GaAlAs. It was found that the increase in the confinement of the charge carriers produced by the increase of the magnetic field and/or the dimensions of the nanostructure generates a shift to blue in the transition energies of the electrons. Also a multiple resonances in the two-level atom approximation was found. These were associated with transition between excited state and ground state and a second transition getting a change permanent dipole moment.For the English version of the abstract, please be careful with the language.

Published
Dec 15, 2018
How to Cite
CAUSIL, D.; URANGO-BAQUERO, M.; PORTACIO, A. A.. Second-Harmonic and Third-Harmonic Generation in Nanostructures with Asymmetric Confinement Potential: The Role of Two-level Atom Approximation. Revista Cubana de Física, [S.l.], v. 35, n. 2, p. 97-101, dec. 2018. ISSN 2224-7939. Available at: <http://revistacubanadefisica.org/index.php/rcf/article/view/RCF_2018_35_97>. Date accessed: 22 mar. 2019.
Section
Original Articles